Getting invited

How do I know if I got invited to beta test a halo game on pc

You will have a notification in the top left of halo waypoint.

You’ll have a message in your Inbox here, assuming you’re signed up and opted in:
https://www.halowaypoint.com/en-us/messages

You can also check the bottom of your Insider profile to see if you have been granted a Steam key:
https://www.halowaypoint.com/en-us/halo-insider/profile

Thanks