APPLE.COM/BILL on a bank statement means Apple charged your card. It does not tell you which product. It can be iCloud+, Apple Music, TV+, Arcade, Apple One, or any App Store subscription, including a trial you forgot.
See the split
On iPhone: Settings, tap your name, tap Subscriptions. Each line is a product. Cancel the ones you do not use. Web copy of the same list: apps.apple.com/account/subscriptions. Walkthrough: how to cancel Apple subscriptions.
Family Sharing
The organizer pays. Members cannot cancel the organizer’s plan. If you see a bill you do not recognize, ask who is the Family organizer.
Two bills for one app
ChatGPT, Netflix, and others can bill through Apple and through a website. Canceling one does not cancel the other. Unwanted Subscription will surface both when a receipt and a statement disagree. Check both before you assume you are done.