Hello My, welcome to the Microsoft community my name is Luiz Cruz, I am a Windows 10 expert user and would be happy to help you;
I understand that the TurboTax 2020 program is showing the message that it is incompatible;
Initially I recommend that you contact Software support and check if they have a solution for this issue;
You can try installing the program in Windows 7 or 8 compatibility mode;
Right-click on the program setup icon and access Properties;
Click on the Compatibility tab;
Check the option: Run this program in compatibility mode, and check Windows 8;
Below also check the option: Run this program as administrator;
Click Apply and then OK;
Try installing the program again;I hope I helped, see you soon!
I have tried what you have suggested, the program still opens with a blank screen