You will report this in the Retirement Plans and Social Security section under Wages & Income. This will be covered in the new IRS Form 8915-F. However, the Form 8915-F has only been just released by the IRS on 02/03/2022 for including in a 2021 tax return. It will take awhile for the form to be available in TurboTax so the questions are not being asked until the form is available.