Hello there Katerochek_1717,
I understand you're noticing a charge, but unable to determine where it is appearing from correct? Check out the following information to see if I'm able to help.
As you are unable to locate a subscription for the amount that is being charged, are you part of a Family Sharing group? If you are, check with other members of your Family Sharing group to see if they may have purchased something. If you are the organize of a Family Sharing group, your payment method would be used for purchases.
If you're not part of a Family Sharing group, take a look at the following resource to see if you're able to locate what the charge is for. Keep in mind that this charge could be for a past purchase, or purchases, that weren't able to complete, so check to see if there are prior purchases this could be related to:
If you see 'apple.com/bill' on your billing statement
If you're still unable to determine what this charge is for, you'll want to Contact Apple Support directly to look into this with you.
Have a great day!