The may be referring to the Earned Income Tax Credit (not deduction) of up to $6660, based upon your income and number of children. The program calculates this for you after you enter your dependents in Personal Info, and your income data in Federal > Wages and Income. See:
2020 Schedule EIC (Form 1040) (irs.gov)
The credit appears on line 27 of Form 1040.
2020 Form 1040 (irs.gov)
