When will i receive my refund

I report my taxes in April 2021 and I still haven't received the letter to be able to pay the 2020 taxes

This depends on when and how the tax return was filed. If you filed electronically you should expect your refund in 2-3 weeks. If you mailed your tax return it will take around 6-8 weeks. You can always keep track of your refund using the Where’s my refund link on the IRS.gov