Option 1: From Apple Email
Apple sends an email receipt every time you are billed.
Search your inbox for:
from:apple.com subject:Your receipt
Option 2: From Apple’s Website
Sign in with your Apple ID
Find the subscription under “Purchases”
Click “Receipt” or “View Invoice”
Option 3: From Your iPhone / iPad
Open Settings
Tap your Apple ID (top of the screen)
Tap Media & Purchases → View Account
Tap Purchase History
Find the subscription → Tap to view the receipt