Zero.
I took two years of French and one year of Spanish in high school. And guess what...it doesn't help me at all at the moment...but that's because my mate (speaks perfect English & doesn't even sound Chinese unless he's speaking the language) and his family (his grandparents are the only ones who don't know English) are Chinese. >_< lol. Sucks when they're conversing in Chinese and I'm just like, "Okay, what's going on?"