Previous Year Taxes - Deductible

Hello,

 

When I filed my 2020 taxes, I had to pay more taxes to both federal and California state. So when I completed the 2020 tax return, I saw a message that I can deduct these payments from my 2021 taxes. However, I couldn’t find a place to enter them into my 2021 taxes. Does entering this amount will affect the amount that I need to pay for my 2021 tax return if I got the standard deduction?

 

Thanks!