First, watch this video to learn how to Screen Record
Also, want to follow a few simple steps?
With iOS 14 or later, go to Settings > Control Centre and tap More Controls. If you have iOS 13 or earlier tap Customise Controls.
Tap the + Add button next to Screen Recording.
Open the Control Centre on your iPhone.How do I do this? 👇 To open Control Centre, swipe down from the top right-hand corner of your screen. To close Control Centre, swipe up from the bottom of the screen or tap the screen.
Touch the grey record icon to start recording
Swipe the Control Centre closed and complete the task
When you have captured everything you need on your screen open Control Centre and then tap the red record icon.