It seems that Apple will not add replaykit and many screen recorders are pulled from App Store, but you can still
record iOS screen easily without jailbreak.
Method 1: Go to
Emu4iOS store and find the iRec from the app list, then install it. This app enables you to record screen easily and it’s for free. But its functions are limited, and its red status bar will also be captured.
Method 2: Use online phone manager to display your screen on computer, then use a desktop recording tool to make this recording. You can choose the recording mode you want and make annotations.