Ipad Screen saver

The iPad doesn’t have a “screen saver” - but does have screen Wallpaper.

The iPad User User Guide describes all the features of your iPad - including how to set or change your screen wallpaper. Here is a direct link to the relevant pages of the Guide:

Change the wallpaper on iPad - Apple Support

change wallpaper for Lock Screen. But don't lock your iPad, instead pull from the top down, then it stays on that screen for ever