And I still got a lot of credit I still owe 9
But they charge no interest, so I pay no interest
Meaning I pay no mind, If there ain't no fine, I'm fine
I hope I ain't boring y'all rappin bout rap
An extended metaphor based on the idea of credit and payments. It’s still 09, i.e. the year, and he still owes 9, i.e. his nine creditors, so he is getting “credit” in both the financial and the conventional sense (props). His creditors are presumably his label — because they aren’t charing him “interest”, i.e. hidden fees, recoupment costs, etc., he doesn’t really have to worry about the business side of things. He doesn’t have to get rich as long as his label isn’t trying to actively screw him over.
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