i need a tampermonkey script which pops up when I visit a google form where it reads the form fields, then asks me for input to each field and sends it, then allows me to loop it with variable time between sending in ms. It should have a minimize button w

Creating a Tampermonkey script that meets your requirements involves several components, including handling the DOM of the Google Forms page, user input, and UI elements for controlling the script. Below is a basic version of such a script tailored for Tampermonkey.

Please note that this script is intended for educational and personal use. Be sure to respect the terms of service of Google Forms and any applicable laws regarding automation and data submission.

```javascript
// ==UserScript==
// @name         Google Forms Auto-Filler
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Automatically fills Google Forms with user input.
// @author       You
// @match        https://docs.google.com/forms/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // Create UI Elements
    const uiContainer = document.createElement('div');
    uiContainer.style.position = 'fixed';
    uiContainer.style.bottom = '10px';
    uiContainer.style.left = '50%';
    uiContainer.style.transform = 'translateX(-50%)';
    uiContainer.style.backgroundColor = 'black';
    uiContainer.style.color = 'red';
    uiContainer.style.padding = '10px';
    uiContainer.style.borderRadius = '5px';
    uiContainer.style.zIndex = '9999';

    const minimizeButton = document.createElement('button');
    minimizeButton.innerText = '⏳';
    minimizeButton.style.backgroundColor = 'transparent';
    minimizeButton.style.color = 'red';
    minimizeButton.style.border = 'none';
    minimizeButton.style.cursor = 'pointer';
    
    const startButton = document.createElement('button');
    startButton.innerText = 'Start';
    startButton.style.color = 'red';
    startButton.onclick = startFilling; // Start filling function

    const stopButton = document.createElement('button');
    stopButton.innerText = 'Stop';
    stopButton.style.color = 'red';
    stopButton.onclick = stopFilling; // Stop filling function
    stopButton.disabled = true; // Start disabled

    const refreshButton = document.createElement('button');
    refreshButton.innerText = 'Refresh';
    refreshButton.style.color = 'red';
    refreshButton.onclick = refreshForm; // Refresh function

    let intervalId;
    let isRunning = false;
    
    uiContainer.appendChild(minimizeButton);
    uiContainer.appendChild(startButton);
    uiContainer.appendChild(stopButton);
    uiContainer.appendChild(refreshButton);
    document.body.appendChild(uiContainer);

    // Minimize functionality
    minimizeButton.onclick = function() {
        uiContainer.style.width = uiContainer.style.width === '30px' ? 'auto' : '30px';
        uiContainer.style.height = uiContainer.style.height === '30px' ? 'auto' : '30px';
        uiContainer.style.overflow = uiContainer.style.overflow === 'hidden' ? 'auto' : 'hidden';
    }

    // Function to prompt and fill form
    function askForInput() {
        const fields = document.querySelectorAll('input, textarea, select');
        fields.forEach(field => {
            const fieldType = field.tagName;
            let userInput = prompt(`Enter value for ${field.name || 'field'}:`);
            if (userInput !== null) {
                if (fieldType === "INPUT" || fieldType === "TEXTAREA") {
                    field.value = userInput; // Set input/textarea value
                } else if (fieldType === "SELECT") {
                    field.value = userInput; // Set select value
                }
            }
        });
    }

    function startFilling() {
        isRunning = true;
        startButton.disabled = true;
        stopButton.disabled = false;

        // Looping functionality
        intervalId = setInterval(() => {
            if (!isRunning) {
                clearInterval(intervalId);
                return;
            }
            askForInput();
            // Submit the form after user fills the values
            const submitButton = document.querySelector('form [type="submit"]');
            if (submitButton) {
                submitButton.click();
            }
        }, 3000); // Set the interval time in ms
    }

    function stopFilling() {
        isRunning = false;
        clearInterval(intervalId);
        startButton.disabled = false;
        stopButton.disabled = true;
    }

    function refreshForm() {
        askForInput(); // Reload data from the form
    }

    // Start minimized on load
    minimizeButton.click();
})();
```

### Note on Functionality
1. **Variable Interval Timing**: The interval for the submission is set to `3000` milliseconds (3 seconds). You can modify this value as needed. You could also create an input field to ask users for this value.
2. **Prompt for Each Field**: The script prompts users for each field. Ensure that the field identification (using `field.name`) is correct per your forms.
3. **Submission Logic**: It assumes that the submit button is the first one encountered. This might need refinement based on the specific Google Form you are using.

### Installation
1. Install Tampermonkey extension for your browser.
2. Create a new script and paste the above code into it.
3. Save the script and test it on a Google Form page.

### Important
When using automation scripts, especially on platforms like Google, always make sure to comply with their terms of service. Automating form submissions may be against those terms in certain contexts.