I got charge 21.98 without purchasing anything????

Start here and check:

See your purchase history in the App Store or iTunes Store - Apple Support

If you don't recognize that purchase, contact iTunes Store support and explain your problem, fill out this form:

iTunes Store - Contact Us - Apple Support

Regards

Giulio

Check your purchase history as already instructed. Also:

If you see ‘itunes.com/bill‘ or an unfamiliar charge on your bank, credit card, or debit statement - "Before you contact Apple to request a refund for a charge you don't recognize…"

https://support.apple.com/HT201382

If you think there really is something that shouldn't be there:

Report a Problem - "Sign In for help with iTunes purchases made in the last 90 days"

http://reportaproblem.apple.com

Other ways to contact iTunes Support:

https://www.apple.com/emea/support/itunes/contact.html

or

https://support.apple.com/country-selector/itunes

I presume you are posting images of a credit card statement or something? Read the links I posted. If you do not see evidence of purchases on your purchase history and you are not the organizer for a family sharing group then it is possibly bank fraud in which case contact your bank or card about this. Responses you get on this forum are from other users like yourself and we can do absolutely nothing about it, only provide advice.

That looks highly suspicious to me. Does it not specify what you are supposed to have bought? Has any money actually left your bank account? It could be a scam to trick you into giving out your Apple account details.