You can look at the figures. Their most recent earnings statement[1] has “wearables, home and accessories” at 11.9% of their revenue. We don’t know how much of that is AirPods but I’d be surprised if it’s less that 50% given Watch and HomePod sales.

[1] https://www.apple.com/newsroom/pdfs/FY22_Q1_Consolidated_Fin...