Turbo Tax doesn't roll over estimated payments. You have to enter them manually each year. And 2020 estimated payments don't go on your 2021 tax return.
Did you have some of your 2020 refund applied to 2021? You can fix it here
Federal on left
Deductions and Credits at top
Then scroll way down to Estimates and Other Taxes Paid
Other Income Taxes - Click the Start or Revisit
Next page scroll down to 2020 Refund Applied to 2021
Click Start or Update by the tax you applied