Hello Dgoldfe13,
Thank you for using Apple Support Communities. It's my understanding that you're not receiving FaceTime calls on your Mac. I can see how this could be concerning. I'm happy to help.
If you haven't already, make sure that your Mac has the latest software and that you've got a strong internet connection.
How to update the software on your Mac
Also, make sure Do Not Disturb has not been enabled and all FaceTime notification settings are accurate.
Use Do Not Disturb on your Mac
Use notifications on your Mac
If the issue persists, it is that possible FaceTime is off. When FaceTime has been turned off you won't receive notifications for calls and to the caller it will appear that you're not answering. While in FaceTime, choose FaceTime > Turn FaceTime On.
Let us know the results. Does this occur while connected to a different network? Please include specific error messages and any other troubleshooting steps that you may have tried.
Have a nice day!