Your retirement income is taxable and has to be entered on your tax return.
You should have received a form 1099-R showing your retirement income.
You can enter your form 1099-R by following these steps:
@SarahB4 wrote:
Where do I enter my pension income on TurboTax?
To enter, edit or delete a form 1099-R -
Or enter 1099-r in the Search box located in the upper right of the program screen. Click on Jump to 1099-R