touch screen not working

Change 3D or Haptic Touch sensitivity on your iPhone

1. Go to Settings and tap Accessibility.
2. Tap Touch, then tap 3D & Haptic Touch. Depending on the device you have, you might see 3D Touch or Haptic Touch only.*
3. Turn on the feature, then use the slider to select a sensitivity level.

Change 3D or Haptic Touch sensitivity on your iPhone - Apple ...

my touch screen wont work on my i phone 11

turns on but cant do anything after that

See if your phone qualifies under this --> iPhone X Display Module Replacement Program for Touch Issues - Apple Support