I was charged 50$ for Apple, why is that?
I was charged 50$ for what? I have no purchased anything worth that.
iPhone 8 Plus, iOS 14
See the following Apple articles:
View your purchase history for the App Store, iTunes Store, and other Apple media services
How apps, content, and subscriptions from Apple are billed
How apps, content, and subscriptions from Apple are billed - Apple Support
If you see "apple.com/bill" on your billing statement
If you see "apple.com/bill" on your billing statement – Apple Support (UK)
If you see an unexpected charge:
You can request a refund* for a purchase that you don't recognize, but you must pay for the purchase first. You can also cancel a subscription if you don't want to continue it.
*You must request the refund within the refund period.
Refunds are not guaranteed. For more information, see the Terms & Conditions.
If you have received an invoice from Apple.
Tap on Report a problem on the invoice.