As a PSA for the community and OP, removing the score from the record does not remove mention of the test. The College Board merely replaces the score with a statement, “score cancelled per student request”. Interpret as you will, but I’m guessing that the implication is not that a lot of 5’s (and even 4’s) are being cancelled.
I can’t say that I read every post above, so if this is duplicative, I apologize, but most math teachers and tutors I’ve spoken to say that Calculus (AB or BC) is first and foremost an algebra test. If your algebra skills are not solid, there is almost no path to success.
So, perhaps some algebra practice (IXL, Khan, etc) would be helpful to OP. Or maybe time is too short for this kind of help.