i submitted my paypal account as a means of payment for my service on a website and the response was that my account is not verified. Please can someone guide me on how to get my paypal account verified.
You need to add and confirm a credit visa card on your paypal account.
However you can't receive paypal payments in Nigeria, you can only send them funded via that credit (not debit) visa card.
Paypal varies a lot country to country and can only offer the services that the banks / governments of that country allow it to offer. There are quite a few countries unable to receive paypal payments.