Here's a breakdown:
* Je: I
* ne...pas: not (this is the negative construction in French)
* parle: speak
* beaucoup: much
* de: of (used to specify the language in this context)
* Français: French
So the sentence literally translates to "I not speak much of French." While grammatically correct, it's a more direct translation than the natural-sounding English equivalent, "I don't speak much French."