I only have two years of spanish and i dropped it my third year. Should i pick up a third year again to get the credits or does it not even matter?
You should do the third year. It's recommended by most colleges, and you don't want to come across as a student who does the bare minimum
Most colleges either expect 2 years as minimum or the entire 4 years, in between is useless. As long as you're taking a replacement class (ie not seminar) there's no difference.