Yes, the sentence is grammatically correct.
It means the speaker is politely requesting permission from a person they refer to as "sir" to send a digital version (soft copy) of their work for review before producing a printed version.
Here are a few possible rephrasings:
1. "Good morning, sir! May I send you a digital copy of my work for your review before I print it?"
2. "Good morning, sir! Could I please send you a soft copy of my work to


