Sorry they don't post the phone numbers and we don't know any. See my contact links above.
Does your Mac meet the system requirements?
https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...
Where do you get stuck?
Mac 2019 wont install or open FAQ
https://ttlc.intuit.com/community/troubleshooting/help/turbotax-for-mac-won-t-open-when-installed/00...
A Mac user posted these. Maybe they will help.
https://ttlc.intuit.com/questions/2899293-turbotax-for-mac-won-t-open-when-installed
https://ttlc.intuit.com/questions/1899267-administrator-rights-mac
https://support.apple.com/en-us/HT202491
