Before filing i have to add jury duty pay to my Federal tax return. How to?

Under Wages and Income, then Less Common Income section, you'll see Jury Duty. Hope this helps!

Here’s how to enter jury duty pay:

1. Type jury duty pay in Search (magnifying glass) in the top right corner
2. Select Jump to jury duty pay
3. Enter the amount received and the amount (if any) repaid to your employer.

See Where do I enter jury duty pay?

@elel26