Hello
Herman Leung!
You will need to install a point fix which will be available (currently it isn't yet ready) from
https://knowledge.broadcom.com/external/article/198337/cumulative-post-itms-85-ru4-point-fixes.html, then
MacOS Big Sur (11.0.1) agent health status will be properly shown in Console UI.
We will let you know when point fix will be published.
Best regards,
IP.