yashwanth_kalva Julian_Sharp is mostly correct. Items are not weighted in the psychometric sense; however, some questions are worth more than one point because you earn a point for each correct selection made. That is not the same as weighting because we do not say "this particular item is worth 3 times as much as another item, and you get all of the points or nothing." You earn points for doing some correctly even if you have not answered all parts correctly. More important, points are based on the blueprint, meaning that if a question is worth 3 points as an example, and the blueprint requires 5 points for that skill, we would either include 2 one point items or one 2 point item to make sure that you had 5 points on that skill.
All that being said, the passing score is 700 for all MS certification exams. This is not a percentage. This is a scaled score. Learn more here:
https://docs.microsoft.com/en-us/learn/certifications/certification-exam-policies#scoring-and-results