If you want a roll, then the dough I be raking
This could mean a couple of different things. First, it could mean that you could buy some of the beats that were mentioned in the previous line. Q-tip did a lot of the production for Tribe, so if you go to the funk manor and get a beat from him he would make some cash from it.
Second, it could be an open invitation for a battle. Phife and Q-tip constantly boast about winning battles (see Phony Rappers). Sometimes people battle for money, so if you want to battle him, he could also get some cash from that.
The short version? Q-tip is about to get paid.
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