Hi chace226
welcome to the Apple (user-to-user) Community.
Re: "AirPods Max not turning on"
Wondering if Apple support's online article (link below) may help:
How to:
Resolve Wi-Fi and Bluetooth issues caused by wireless interference - Apple Support
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Trouble-shooting:
Check if a speck of wax or dust could be causing trouble:
How to clean your AirPods, AirPods Pro, AirPods Max, and EarPods - Apple Support
What to do: If your AirPods won't connect - Apple Support
How to: Charge your AirPods and learn about battery life - Apple Support
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You might want to check that you are only connecting AirPods to one device at a time. (Eg may not be switching between multiple devices.)
   See if turn off / turn on bluetooth helps
   or Switch your AirPods to another device - Apple Support
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Your iPhone (or Mac / device you use) may need updating to the latest compatible iOS version. Eg: About iOS 16 Updates - Apple Support (says iOS 16.5.1 is the latest)
(The firmware on the AirPods can then be updated automatically when paired).
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More Support if needed:
AirPods Support Website:
Find all the topics, resources, and contact options you need for your AirPods....
AirPods Support - Official Apple Support
All the best :-)