Dear William Zhagui1,
Good day! Thank you for posting to Microsoft Community.
I understand that you have a concern on your outlook text showing as question marks in Outlook for Mac. My Sincerest apologies for the scenario you are encountering.
Since you have already checked with Fontbook and confirmed the font type, could you kindly try setting up your account in a new Outlook profile and see if issue persists: For reference: Manage profiles or identities in Outlook for Mac - Microsoft Support (Please do not delete the current profile as yet to prevent any data loss)
Meanwhile If the issue persists, I recommend contacting Outlook for Mac support to get an accurate solution from a dedicated team. These experts can assist with suggestion based on your current setup and can advise with detailed collected logs if needed. For reference: Contact support within Outlook for Mac - Microsoft Support.
Your kind understanding is highly appreciated. Thank you for your cooperation.
Best Regards,
Ashraf.