Hi Guys, Is it is it necessary to 'completed all applicable prerequisite badges to unlock any superbadge' to win salesforce quests.Do I have to complete all badges of superbadge to complete the quests ?

I think it's boilerplate text. If there is a superbadge in the Quest Trailmix then you'd have to do all the prerequisites to unlock the superbadge. Then do the superbadge. Otherwise that text has no impact.