The TT BUSINESS program handles the 1120 however if the business closed mid 2021 then you have to use the 2020 downloaded program to complete the short year return. If you used the TT BUSINESS program to file the 2020 return then you will NOT be able to transfer the information you must start a new tax file and enter everything anew. You may want to seek local professional assistance for a final short year return.
https://www.irs.gov/businesses/small-businesses-self-employed/closing-a-business
