Can anyone tell me where to enter the tax amount I sent in already that need to be subtracted from the taxes I owe on my late filing?

[DoninGA]

When did you pay the 2018 taxes?  Did you file an extension and pay taxes with the extension?  If not, did you pay 2018 estimated tax payments on or before January 15, 2019?  Did you pay 2018 taxes on the IRS payment website and indicate they were taxes for a 2018 tax return Form 1040?

[Bees]

Type estimated tax payments into the search box on the upper right . Add any payments you made for the tax year there. 

It is listed under deductions and credit section.then under estimates and other payments.