There’s a charge on my account that I don’t know what it is

We are not Apple but your fellow end users. We cannot look up any account information nor resolve this type of problem here.

However, some charges can be scams spoofing Apple. Please see this Apple article:

If you see 'apple.com/bill' on your billing statement - Apple Support

Be sure to put your card issuer on notice of potential fraud as soon as possible.

Never post personal information on a public forum. I've asked the hosts to remove your phone number.