Yes, the sentence is grammatically correct. It means that the speaker intends to share their entire story with someone at a future time, but for the moment, they prefer to focus on writing scripts together.
Here are a few possible rephrasings:
1. "Someday, I'll share my entire story with you, but for now, let's continue writing the scripts."
2. "I plan to tell you all about my story one day, but for now, let's keep working on the scripts."
3.


