I want to enter the income from Form 1099

Enter a SSA-1099, SSA-1099-SM or RRB-1099 under

Federal Taxes (Personal for Home&Business)

Wages and Income

Then scroll down to Retirement Plans and Social Security

Then the second line - Social Security (SSA-1099. RRB-1099) - click the Start or Revisit button

 Go to Federal> Wages & Income>>Retirement Plans and Social Security  (SSA1099 and 1099RRB) to enter your SSA1099.