Would strongly advice against using brake fluid on any automotive paint --- ever!
It might look OK now, but your paint will bladder off in a couple of weeks / months, even if you clean it right after... it's a big no-no, and probably the most destructive thing you can do to your paint short of taking a screwdriver and carving your name in the paint lol. It's so destructive that even body repair places hate working on cars that were destroyed with brake fluid as can even react with new paint, despite prep-work.
In a case like that... you can try a little WD40 if you clean it straight after with soapy water... or best is just some proper polishing compound and a polisher machine (or lots of elbow grease).