How can I receive Apple receipts

For iTunes and App Stores purchases you can see receipts in your purchase history: https://support.apple.com/HT204088 Apple also emails you a receipt for any charge made to your account. "Search your email for the words “receipt from Apple.” - https://support.apple.com/HT201382

If you aren't then check you set email and also check your junk mail folders.

About your Apple ID email addresses - Apple Support