Some services like PayPal and Wise let you pay for money transfers with a prepaid card, but not all do. If your prepaid card is designed to process transactions securely (i.e. if it's 3D Secure) and it has a 16-digit number and expiry date, there's a good chance you can use it like a debit or credit card to pay for your transfer.
Check with your transfer service to find out for sure what payment methods are acceptable.