control center app wont work

Brother replaced Control Center with iPrint&Scan. See the following for more information and to see if your printer is compatible with the new app. https://help.brother-usa.com/app/answers/detail/a_id/150551/~/download-and-install-brother-iprint%26scan---windows-or-macintosh-computer

Note that you can use a Brother printer and or scanner without Control Center or iPrint&Scan. I have never used either with mine.

The following link also has information about Brother and Catalina: https://support.brother.com/g/s/id/os/macintosh.html