combination (but not with "all the items passed")

Good morning,
I'm trying to create an intercative video, with a medical score quiz, with a combination of two types of assessments for it to be considered successful. First the learner must have correctly answered at least 14 items out of 15. Then, the overall number of points must be a precise value, with an margin error of 1 point. I manage to calculate the points, but can't figure out how to calculate the items as well. I turn around. Thank you very much for your help.
DF