"W" in senior year of high school

Hello All:

I am a high school senior with 4.4 weighted average and 2070 SAT, above 650 SATIIs. My senior year course load is:
AP CALC BC
AP PHYSICS B
AP ENG LANG
AP GOV/Econ
SPANISH 4

I am struggling in Spanish 4. At this point with semester end about 4 weeks away, I am at 72% (C). Tomorrow is the last day to WITHDRAW from SPANISH and I am contemplating “W” because I fear the probability of getting a C (60%) or a D (40%).

So my question is: How much does it hurt my chances for admission if my transcript has a W for spanish in semester1 of senior year. I am applying to UC’s and privates.

I am in desperate need of help right now.

Thanks