If I fail AP Bio this semester and drop it, will it look bad on my transcripts for college?

I’ve never took an AP class and foolishly signed up for AP Bio and 3 other hard AP classes. I can’t drop out of it now - i’ve got to wait until the semester ends. What do you think? If I get an F or D, I definitely will drop it and do you think it’ll affect my applications BADLY? (I have a 3.2 unweighted GPA btw and im a senior)

If I have a C or a B in the class, should i just keep it?

Not sure which colleges you plan to apply, but for many colleges getting a D or F in any Senior year class would be cause for rescinding an acceptance. Also if the college asks for Mid-year Senior grades, it could be a the difference between an acceptance and a rejection. Do everything in your power to make sure you do not get a D or F.