Why would you fail one, let alone both, of these exams? If you have a great GPA/rank/courseload, what’s going on that you would fail the AP tests?
Unfortunately, the impression it makes if you have high grades plus low scores is that either your school is not very demanding (grade inflation) or that you don’t take tests seriously. Neither of these is good for college applications. Though I suppose it looks better than low grades and high scores, which can signal a kid with an attitude problem.
AP Classroom should be available to you, with review videos and tons of practice problems. APUSH is next Friday and AP Calc AB is Monday 5/12. That means you still have time to review and do better.
People on CC will tell you that colleges don’t care about AP scores, and that is true for some colleges, but not the ones that kids care most about on CC.