I received a form SSA 1099 from SS where I repaid benefits. amount is more than 3k. box 5 is red & in parenthesis. how/ where do I enter this ?

Please see this answer from IreneS:

Enter the amounts as they appear on your SSA-1099. 

A net negative amount entered in Box 5 indicates you paid back social security that you received in a prior year. This could mean you are eligible to receive a deduction or credit this year.

Enter the amount in box 5 of your SSA-1099 as a miscellaneous deduction on Schedule A by following these steps:

1. Click on Federal Taxes > Deductions & Credits  [In TT Self-Employed:  Personal > Deductions & Credits > I'll choose what I work on].
2. Scroll down to the Other Deductions and Credits section and click on the Start/Revisit box next to Other Other Deductible Expenses. 
3. On the Less Common Expenses screen-- 
   1. If the repayment was $3,000 or less:

• Click the Yes box.
• Enter the amount on the Enter More Expenses screen.  
• If the repayment was more than $3,000:

• Click the No box. 
• On the Any Other Deductions screen, click the Yes box.
• On Report Other Deductions, enter the amount in the box Claim of Right Repayment (Only If Over $3,000).  
• Click Continue.