Do you need to buy the program or download 2020 you bought? And ps... All the Desktop programs have the same forms. You just get more help and guidance in the higher versions.
You can buy the download here
https://turbotax.intuit.com/personal-taxes/cd-download/
Or did you start 2020 on the old computer? Are you using Windows or Mac?
For Windows....
You only need the file ending in .tax2019 to transfer into 2020.
Your tax files end in .tax or .tax2017, .tax2018 or .tax2019 etc. They should be in your Documents in a Turbo Tax folder. You should also have the pdf files of each year. Or search your computer for all files ending in .tax. Also if you haven't done it, I would open each year in the program and save it as a PDF file, go to File-Save to PDF so you don't need the program installed to view or print your return in the future like to get a mortgage or loan, etc.
What I would do is just copy the whole Turbo Tax folder that is under your Documents. That should be where the .tax files and pdf files are stored. Copy that folder to a flash drive or best yet is to burn it to a CD or DVD and then you will have a backup of them. Then on the new computer copy the folder (or files) from the flash drive to your Documents folder.
The programs need to be installed from the CD or download them again. You don't need to install them unless you need to amend or open a return.
