I got a 72 average on precalc first quarter. I still have a while to Pass/Fail, but how bad does it look to have a pass/fail on my transcript?
Some schools make not accept a P/F instead of a letter grade for a core academic class. You would need to check with your counselor if this will be an issue and also with any colleges you plan to or/have applied.
It would be a red flag, and those are to be avoided. Your grade is still salvageable, though. Keep working hard, and get help.