[Hugo Ashmore]

bb-config.php is found if you look in your doc root, that’s the top level directory that serves your WP site.

bb-config should have the same DB connection strings as your wp-config file, also found in the same directory.

As a rule of thumb ‘Backups’ will tend to roll something back to the state it was at the given date for that backup file, so you need to think about what the backup files actually contain and whether you want to revert to one of them, taking into account the possible data loss that it will result in (at this stage I wouldn’t rush into reverting to a backup just yet)