Where do I enter my interest, I earned off my savings account in 2021

[VolvoGirl]

You should get a 1099INT for it.  Wait for it.  They have until Jan 31 to send it to you if it is more than $10.  If it is less than $10 you can get the amount from your Dec bank statement or logging into your bank account online.

Enter a 1099-Int under

Federal

Wages & Income

Interest and Dividends

Interest on 1099-INT - Click the Start or Update button

For interest from the IRS put the amount in box 1.