What exactly are you looking for? You don't get a tax credit for an SSA-1099. The SSA-1099 is income that you have to report.
You indicated that you are using TurboTax Free Edition. Free Edition does not support Form 1040, so I assume your tax return is on Form 1040A. The amount from box 5 of your SSA-1099 should be on line 14a of Form 1040A. If any of your Social Security benefits are taxable, the taxable amount will be on line 14b. If there is an amount on line 14a, but line 14b is blank, none of your Social Security is taxable.
