General rules for assessment scores:
These scores should NOT be interpreted as if they were traditional school grades/test scores. In many instances, a score of 50 or 60 may be an acceptable level for many position types (while those same scores would often indicate a failing grade by traditional school standards). We recommend that you rely on the scores of employees who perform comparable job functions to the position for which the applicant has applied. We also recommend that the hiring manager take the assessment so that he/she has a better understanding of the assessment.
Here's a brief video that explains where to view assessment scores and how to interpret them:
Why does a candidate have an assessment score before I sent them the assessment?
There are two reasons a score may be on an applicant’s profile before you send them the assessment: