I suggest you only enter the payments you made in 2021 which were to be applied to tax year 2021. Then answer (0) to that question.
If the 1-15-21 payment was entered or carried over, enter that same amount as the answer that question.
You can check your 1040 Line 26 to see what is being reported as estimates paid for tax year 2021.
If you have TurboTax Desktop, you can click that line and then click the "Tax Payments" tab up top.
Online:
Click Tools, Tax Tools, View Tax Summary, then "Preview my 1040" on the left side bar.
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