Yes, It shows up on the federal Carryover worksheet, line 8a "Federal overpayment applied to next year estimated Tax" under the column for 2020.
It also shows up on the tax payments Worksheet for 2021 line 6 "Overpayments applied to 2021".
And it totals correctly as part of line 26 on 1040-SR "2021 estimated tax payments and amount applied from 2020 return."
