First of all you won’t be able to install or update 2020 anymore. They stopped supporting 2020. So you won’t be able to download the state either.
For 2021. Before you try to open your return you need to download the state programs. After you get the program installed or reinstalled the first thing to do before you open your tax return is to update the program and install any state programs you had. So you first need to start a FAKE return to be able to download the state program (go to File-New Tax Return).
You should be able to download the paid for state. Access your downloads here
https://shop.turbotax.intuit.com/commerce/account/secure/login.jsp?pagecontext=download
Then go to FILE -Open and find your return. You can ignore or delete the fake return.
