Where can I find broker information i.e. broker name, DRE, office etc.

Several places. You can log into thebrandrealty.com and under REAL RESOURCES you can click on REAL California Info.
It’s also pinned in the mentor-huddle channel
Can also go to Workplace: https://realbroker.workplace.com/groups/2863844517266611/
the REAL California Info will be pinned at the top and in the Files section