I'm unable to see my paypal link on my dashboard. I have gone to my settings >account, still I didn't see anything like link.me there or any related to it. How can I get my link so I can receive money from people?
The option to receive paypal payments is sadly not available in Nigeria. You can only send payments for purchases funded by your (confirmed) credit 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.