To call TurboTax customer support
https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number
By chance do you have a new computer (purchased after 10/10/20) or are running Microsoft Version 2H20?
If so try this:
1) change the screen resolution to 800x600 (start>settings>display)
2) launch turbo tax and copy / paste the license code to activate
3) change the screen resolution back to its original setting.
If you purchased the TurboTax software for tax year 2020 from this website - https://turbotax.intuit.com/personal-taxes/cd-download/
Sign onto your download account with the exact same User ID you used to purchase the software - https://shopping.turbotax.intuit.com/unified/downloads?route=myaccounts
TurboTax minimum system requirements for Windows - https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...
TurboTax minimum system requirements for Mac - https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...
Install TurboTax for Windows - https://ttlc.intuit.com/community/refund-status/help/how-do-i-install-the-turbotax-software-for-wind...
Install TurboTax for Mac - https://ttlc.intuit.com/community/installing/help/how-do-i-install-the-turbotax-software-for-mac/01/...
Troubleshoot install for Windows - https://ttlc.intuit.com/community/troubleshooting/help/troubleshoot-installing-and-running-turbotax-...
Troubleshoot install for Mac - https://ttlc.intuit.com/community/installing/help/turbotax-for-the-mac-installation-troubleshooter/0...
