See the following Apple articles:
Countries and regions that support Apple Pay
Countries and regions that support Apple Pay - Apple Support (EG)
About billing for Apple subscriptions and media products in India
About billing for Apple subscriptions and media products in India - Apple Support
India
• Apple ID balance (from adding funds)
• Net Banking (adding funds only)
• UPI (adding funds only)
You can use / pay with your Apple ID balance, see the following Apple articles:
Add money to your Apple ID balance
Add money to your Apple ID balance - Apple Support (IN)