Is the Sunnah of Jumu'ah (Friday prayer) before or after the prayer, and what is the ruling on one who prays it before, even though it is mostly performed before the prayer in Egypt, and is it two rak'ahs or four?

The Friday prayer does not have a Sunnah Qabliyyah (pre-prayer voluntary prayer); rather, its Sunnah is Ba'diyyah (post-prayer voluntary prayer). Whoever prays before Jumu'ah does not intend thereby a Sunnah Qabliyyah, but rather an absolute nafl (supererogatory prayer). A Muslim has a choice in the number of nawafil before Jumu'ah. As for the Sunnah Ba'diyyah of Jumu'ah, its minimum is two rak'ahs and its complete form is four.