Mohamed Quebec,
As Hani has mentioned, having a friend there won't help you at all.
It is not worth even to mention. The counsellor won't even ask you whether you have "friends" there or not.
However, other measures to your adaptability to Quebec community include:
Family in Quebec (3 pts. max)
Stay in Quebec (5 pts. max)
As for points granted (3 pts. max) for having "family" member(s) there, you get'em if any of your "parents, grand-parents, spouse, siblings or children" are living there.
Your stay in Quebec for studying/working will grant you 5 pts. (that's the max you can get for staying there)
A stay for a duration exceeding 3 months will grant you only "2 pts."
Less than 3 months will grant you only 1 pt (I wonder I got that or not!!! Anyways!)
Good luck.