Databases are protected by automatic backups that are kept for 30 days.
Administrators of a Business Central tenant cannot directly access or manage these backups because they're managed automatically by Microsoft. But admins can restore their environments to a specific point in time in the past using the Business Central Admin Center.
For more information on automated backups in Azure and how to restore an environment, see Microsoft documentation:
Automated backups in Azure SQL Database.
Restoring an environment in the admin center