Either search online to locate and call contact your nearest, “local” Apple Store location to try/attempt to make an appointment to get your Apple iPad Air 4 diagnosed and options presented
OR, failing that,
Contact Apple support via the contact support link located at the upper right hand corner of every Webpage of these Apple support communities.
Use the Device Damage & Repair category.
OR
by installing and using the Apple Support app found in the iOS App Store.
Tap the iOS App Store link below.
https://apps.apple.com/us/app/apple-support/id1130498044
Either way, there is a strong chance that you are going to be in for an expensive device replacement.
When it comes to bent iPads, cracked screens, it is up to the user to provide absolute, incontravertible proof that such things were not user inflicted and are a manufacturing defect.
Here is what you may expect to pay without paid AppleCare+
iPad Repair - Official Apple Support
Sorry & Good Luck to You!