VIP subscriptions cannot be cancelled from within the game, and are managed by the App Store.
How to cancel a subscription on your iPhone, iPad or iPod touch
Open the Settings app.
Tap your name.
Tap the subscription you want to manage.
Tap Cancel Subscription. Or, if you want to cancel Apple One but keep some subscriptions, tap Choose Individual Services. If you can’t see Cancel, the subscription has already been cancelled and won't be renewed.