Saved Data in Online Storage
Each user on your PS4™ system can manage saved data in online storage. Select 
(Settings) > [Application Saved Data Management] > [Saved Data in Online Storage].
To use this feature, you must be a PlayStation®Plus subscriber.
Download to System Storage
Use this function to download saved data in online storage to a PS5™ console or another PS4™ system.
For each game, you can select the saved data to download.
You can also download saved data from the home screen. Highlight the game, press the OPTIONS button, and then select [Upload/Download Saved Data].
Delete
Use this function to delete saved data in online storage. You can select the saved data to delete for each game.