You can find a report of the last scheduled course backups executed in Administration > Site administration > Reports > Backups. This report displays a list of all backups made and their status, as well as the time taken to create them and the next scheduled automated backup execution time.
If you want to view a detailed backup log for a particular course, including the date, hour, and minute when each step of the backup was performed, simply click the 'View logs' icon next to the course name. This log can help troubleshoot backup errors.
(1 in screenshot below) will display a detailed backup log for a particular course, including the date, hour, and minute when each step of the backup was performed (2). This log is useful for troubleshooting backup errors.