Please I need a receipt for my purchase

Looks like a scam / phishing.

Remove that message.

See the following Apple articles:

View your purchase history for the App Store, iTunes Store, and other Apple media services

View your purchase history for the App Store, iTunes Store, and other Apple media services - Apple Support

How apps, content, and subscriptions from Apple are billed

How apps, content, and subscriptions from Apple are billed - Apple Support

If you see "apple.com/bill" on your billing statement

If you see "apple.com/bill" on your billing statement – Apple Support (UK)

❗️Identify legitimate emails from the App Store or iTunes Store

Identify legitimate emails from the App Store or iTunes Store - Apple Support

Click here for more support and assistance.

Have you check your mail box?

See -> How apps, content, and subscriptions from Apple are billed

How apps, content, and subscriptions from Apple are billed - Apple Support

I was billed 7,333.92 I want to no if is for FaceApp subscription

Billed by whom?

Contact your bank, they can find out who (name, address & account number) has collected the amount from your bank account, and when.

the charge is from ITunes because I use that bank to buy things from ITunes. Pls atleast tell me which app the charged for it

Then ask the bank for a description.

We cannot tell you, we are also users of Apple products & services like you.