The US and Canada software is completely different from each other.
You would have to use the US software for the US return, either US online editions or the US desktop CD/Download editions.
The TurboTax US online editions for tax year 2020 should be available in early December on this website - https://turbotax.intuit.com/personal-taxes/online/
The TurboTax US desktop CD/Download editions for tax year 2020 are available for purchase now on this website - https://turbotax.intuit.com/personal-taxes/cd-download/
For the Canadian online and desktop software go to this TurboTax Canada website - https://turbotax.intuit.ca/tax/software
