Thank you for posting your feedback in this Apple (user-to-user) Community forum.
Wondering if you have checked all the requirements for the test have been met:
(Eg: Device with latest iOS version : latest firmware on AirPods)
The hearing features are for those over 18 with mild to moderate hearing loss.
Countries or regions where the Hearing Aid feature is available (approved by authorities there):
AirPods Pro 2 - Hearing Health Feature Availability - Apple
How to: Take a Hearing Test with AirPods Pro 2 - Apple Support
Video: Apple Support's (YouTube) video below explains the new features
https://www.youtube.com/watch?v=Q5noO6dnGBs
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Resource: AirPods User Guide - Apple Support
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More support . info. if needed:
AirPods Support Website: Find all the topics, resources, and contact options (online chat / phone / email etc.) you need for your AirPods... AirPods Support - Official Apple Support
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If needed: Apple's AirPods Feedback Web-form: Feedback - AirPods - Apple