https://bullfincher.io/companies/apple/revenue-by-segment
iPhone: 50.4%
Mac: 8.1%
iPad: 6.7%
Wearables, home and accessories: 8.6%
Services: 26.2%
I assume that the majority of service revenue is App store revenue.
Other services they provide are iCloud and Apple care
That's revenue though. Fixed costs for hardware is probably much higher. If we looked at profits, the percentages would probably look quite different.
I believe Google's Safari payments are a significant chunk of services revenue too (around $20 billion a year.) Then there's Apple TV and Apple Music, which are not nothing.