I have knowledge of this payment or what it’s for?

Hi LorieDudek

welcome to the Apple (user-to-user) Community!

Re: "I have knowledge of this payment or what it’s for? :

How to see what you were charged for: If you see 'apple.com/bill' on your billing statement - Apple Support

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Re: about updating and a payment?"

The first time you use the App Store, or iTunes Apple requires that a payment method is listed in your Apple ID account. This is required even if you are only downloading free apps.

(To add a payment method, please see the "Related Article" above your question.)

See which payment methods Apple can accept in your country or region:

Payment methods that you can use with your Apple ID - Apple Support

What to do: If you need to change or update your Apple ID payment method - Apple Support

How to delete an Apple ID payment method:

Remove a payment method from your Apple ID - Apple Support

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Trouble-shooting:

What to do: If your payment method is declined in the App Store or iTunes Store - Apple Support

or If you can’t download or update apps on your iPhone or iPad - Apple Support

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More Support if needed:

(NB: There is a "Get Support" link (or use the support app) at the bottom of the two webpages (links below)

App Store - Official Apple Support

Find answers to your questions about purchases, subscriptions, payments, and billing:

Subscriptions and Billing - Official Apple Support

All the best :-)