They have a lot of modes you can play in Fortnite now. I stick to the regular Battle Royale mode myself.
I got the skin a couple years ago when they did a collaboration with Star Wars. Considering my aim is not great, I stick to one of the 3 or 4 Trooper skins I have. 😂
When playing Battle Royale you do get missions to complete (a lot) but they are completely optional, only really helping you gain experience and grab unique skins (sometimes). It can be hard to complete those quests depending on the group you face off against - some are way more dedicated to ruining the fun of others than some are.
I try to not mess with people clearly just completing quests. I try to focus on those already fighting or they shot me first. If they clearly see me and run away, I usually (not always) let them go.
RE: No Sword Crown Victory in Fortnite