In My Subscription, the Payment history section lists your charges with the date, amount and status of each one. When available, the Invoice column has a link that opens the invoice or receipt for that payment, which you can use for checking or for your accounting. The history loads automatically when you open the page. If it's empty right after a purchase, wait a moment and reload, since payment confirmation can take a short while to appear.

Looking for what Meta charged to your ad account, not your Ads Editor subscription? That's under the Charges button, in Meta Ads or Monitor Balance, with PDF export.