This launch pad glitch in Fortnite can make you soar above the ground. First, you need to put a launch pad inside a tower and enclose it from all four sides very tightly. You also need to leave the tower open from the roof, as you'll be jumping in there from the top.
Then, you need to go outside the tower and build a ramp as high as possible in such a way that you could jump off it right through the opening in the tower and land on the launch pad.
Lastly, before jumping, you need to be holding an axe in your hands; this will result in a glitch that will allow you to soar above the ground.