The Mandalorian skin is definitely one of the main attractions for Fortnite players this season. As you level up the Battle Pass you will get access to Beskar quests. Finishing these will get you a shiny piece of Beskar Steel that you can use to upgrade the armor plates on your skin. If you finish them all, you will have a fully decked out Mandalorian, covered head to toe in the precious metal.
When you reach Level 73 in the Battle Pass, you will be asked to find Beskar Steel where the earth meets the sky. It’s a reasonably ambiguous clue, but you will need to travel to the highest point on the map to find it.
You will need to make your way to the mountain directly south of Catty Corner. The easiest way to get to the top of it is just to drop straight in from the battle bus. If you don’t do that, you will need to start at the base of the mountain and follow the flags up, or else build your way to the top.
At the summit, you will find a Henchman chest and the piece of Beskar Streel that you need. Just interact with it to pick it up and finish the challenge. This is not the final piece of Beskar Steel that you need to get, and there are three more challenges for you to finish up before you will have all the suit options available to you.
Remember, you can jump into the Locker and edit the skin, turning on or off whichever armor pieces you want to have active at the time.