Whether you are attempting reading, writing, or mathematical section of the CBEST exam, the scores are graded from 20 to 80. It means the scale to pass each section is 41 or above. And to pass the exam in its entirety, you need a score of 123 or more. It is, however, probable to pass the test with a score of 37 on one or two sections. But this assumption is based on the fact that you get at least 123 or higher score.
You’ll pass so long as you manage to attain a 123 score. You don’t necessarily have to get 41 for each section. For example, you can get 37 in the mathematical section and balance the scale by scoring 45 in the writing section.