Does anyone know how to check for 2020 renters tax credit.?

Which state?

RENT

There is not a rent deduction or credit on your Federal return.  If your state has anything for renters you will be prompted to enter your rent info when you complete your state return.  As far as I know, the states that have anything for rent are Arizona, California, Connecticut, Hawaii, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Jersey, New York, Rhode Island, Vermont, Washington DC, and Wisconsin.

https://www.rent.com/blog/states-with-a-renters-tax-credit/

Q.  How to check for 2020 renters tax credit.?

A.  Typically, there's a line on the state form, to claim the credit.  Tell us the state and we'll tell you which line to look at.