TurboTax 2020 for Windows supports operating systems Windows 8 or higher
TurboTax minimum system requirements for Windows - https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...
If you can't install the Desktop program and can't find another computer to install it on you can use the Online web version. We can tell you how to transfer 2019 to the online version.
Start an Online return here,