Yes that is right .tax2021 file. That is your 2021 tax data file you need to transfer into 2022 or to open in the 2021 desktop program. You should also download the pdf file from online.
What software do you have? Do you want to transfer into 2022 Desktop program? Start a brand new 2022 return and it should find the 2021 tax file on your computer. It will look in your Documents - Turbo Tax folder or you can browse to where you saved it.
