Hi, after falling and hitting the floor IPhone’s screen is not responding to any touches, what should I do?

Force restart the phone via the steps in this article. https://support.apple.com/guide/iphone/force-restart-iphone-iph8903c3ee6/ios

If it’s still not working the digitiser is likely damaged and the phone would need to be serviced by Apple.

The phone is likely damaged from the impact then. At this stage a repair at Apple or authorised provider is the best option.

Have it examined.

$329.