Sorry to hear about your mishap!
My first thought is do you see damage to BB, like a dent? Hard for me to believe your frame bent knowing how much car bike racks move around, meaning if your bike was strapped so tight and unmovable, I’m certain your front wheel would have been damaged, even taco’d, for enough force to mess up your frame.
I would have the noise checked out by a pro before spending money on parts, could be something a little bent on the drivetrain making that noise. Hard to believe BB is the issue, so let us know!
Good luck!