Move from the gate now
By “gate” he means trap house (spot that he sold drugs out of, like a house or an apartment), so this line is likely a double entendre:
If you don’t show him the respect he feels is deserved then he won’t sell drugs to you. In the previous lines, he’s just kinda fronting, shooting into the sky, to show that he’s not afraid to kill a fiend who doesn’t get the point.
He’s moved on from the drug selling lifestyle now, since he can make money just rapping.
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