Dropping Calculus AB

So I’m taking Calculus AB this year (as a senior) and I’m currently not doing very well.

If I drop this course, will this affect my chances in getting into CSULB?

Would it better for me to drop the class or continue suffering (and hoping to get a passing grade?)

I know that if I drop a course I have to call the admissions office.

I would not drop any class without contacting each school you applied. Getting a D or F in a Senior year course can be a possible reason for having your acceptance being rescinded so if you are in that grade territory then it might be better to drop the course but check with the schools first.