To earn your Project Management Professional (PMP)® credential, you need to meet the experience and education requirements, and pass the PMP® examination. The exam is a 200-question, multiple-choice test.
Even though the PMP® is based on the PMBOK®, you must rely on other resources as well to prepare for the exam.
This includes training, solving and practicing exam questions, and others.
Focus on answers during exam, not your score, etc.
you barely passed or aced the exam. You are still certified either way.
If you run short of time simply guess at the answers; luck may be with you.