Yeah, you’re right. The actual quote is subscriptions, not subscribers.
“We are happy to report that we had an all-time revenue record in Services during the June quarter, driven by over 1 billion paid subscriptions, and we saw continued strength in emerging markets thanks to robust sales of iPhone,” said Tim Cook, Apple’s CEO.
Yeah, you’re right. The actual quote is subscriptions, not subscribers.
https://www.apple.com/newsroom/2023/08/apple-reports-third-quarter-results/