You can type estimates paid in the search box at the top of your return and click Find and it will give you a link to Jump To it.
OR
To enter Federal or State Estimated Taxes Paid, including a state estimated payment made in Jan 2020 for 2019 (or Jan 2021 for 2020), go to
Federal or Personal (for Home & Business version)
Deductions and Credits
Then scroll way down to Estimates and Other Taxes Paid
Estimated Taxes - click the Start or Update button
For 2020 Estimates Paid go directly to 1040 line 26 with refund applied from 2019.
To enter, edit or delete estimated taxes paid (Federal, State, Local) -
Click on Federal Taxes (Personal using Home and Business)
Click on Deductions and Credits
Click on I'll choose what I work on (if shown)
Scroll down to Estimates and Other Taxes Paid
On Estimates, click on the start or update button
Or enter estimates paid in the Search box located in the upper right of the online program screen. Click on Jump to estimates paid
Or click on Tax Tools on the left side of the online program screen.
Click on Tools
Click on Topic Search
Type in estimated tax payments, click on GO
Federal estimated taxes paid are entered on Form 1040 Line 26