Green’s Dictionary of Slang

bubble v.²

(US black) to improve one’s situation, to make money; thus bubbling n.²

1991		P. Blauner Slow Motion Riot 326: ‘I wanna expand. Get me a spot to start off that would bubble about 10 Gs a day’.
2002		Luniz ‘Dict.’ at luniz.com 🌐 Bubble: To Come Up, Make Hella Scratch.

SE in slang uses

In phrases

bubble around (v.) [fig. use of SE blow bubbles]

to make a harsh verbal attack on someone.

1876

Besant & Rice Golden Butterfly II 79: I will back a first-class British subject for bubbling around against all humanity.