Should I drop or not

I have a B- for the first semester in Anatomy & Physiology. I’m in 11th grade and it’s my lowest grade( I do have a B- in APUSH but it’s not a regular class).

I actually don’t need any more science credits since I have 10 science credits already( I took 2 science courses over the summer).

Will it look better to have the B- in a class that I don’t need at all and have my GPA drop? It will show up as a WP(withdrawn-passing) on my transcript and not be counted into my GPA.

If it matters, I have never dropped a class before; but seeing how I already took extra science classes, I feel like it wouldn’t hurt.

Its better to keep the class. I wouldn’t withdraw unless you had less than a C.