Guild Wars 2

when the trait says 5% to duel skills, does that mean whenever u have two weapons out? Does it mean u have to have two of the same weapon? or only skills that happen to use both weapons at the same time?

It applies for skill 3.

The dual skill is referring to the #3 weapon slot skill which changes depending on both main-hand and off-hand weapons. I believe the bonus will also apply to the #3 skill even if you don’t have an off-hand weapon.