Look at the "Payments" section of the form 1040, where you have several places to list different ways you paid 2024 taxes.
If you paid taxes along with your extension (form 4868) that you probably filed sometime before April 15, then that amount goes onto line 31 -- but they make it confusing, because you need to go to "schedule 3, line 15". On schedule 3, you will list the amount paid with your extension, and then that will also be what you show on line 31.
