Exam pass marks are another one of these myths that low hour pilots go on about when it come to job hunting.
Some quite proudly state on there CV's they got 90%+ average first time passes.
Others don't mention it.
From what I have seen nobody really cares, you usually get a good grilling on the relevant technical knowledge in the interview anyway.
It was in the past used by some company's for filtering to reduce the numbers to interview. I have never been asked for my results but that doesn't mean you will never be asked about them if they need to choose between 2 very similar applicants.