Can you explain what you mean when you say the class wasn’t “taught right”?
Are you aware the AP exams are being changed in format and content, to align with instruction which was taught before the nationwide school closures due to Covid-19?
If your instructors were able to deliver instruction to every student in the class in accordance with the schedule of the instructional rubric from which they work (given to them by the College Board), the exam should be one for which you and your classmates are considered prepared.