There are two ways to save a project:
▪ Auto-save: Whenever there is a change, the project auto-saves itself periodically.

▪ Manual save: Click the [Save] button on the top right to manually save the project.

▪ Check the record: Hover your mouse over the [Save] button to check the last time the project was saved.

▪ Version history: Check the stored history at [File > Version history] if you need to revert to an older version.