How to Double Jump in Roblox?

Double Jumping

You can use Humanoid:ChangeState to force the character back into the jumping state in order to cause the double jump. To make the player's character double jump you will also need to know when the player pressed the jump input. To do this you can use an event of UserInputService called UserInputService.

Is there Another Way to Jump in Roblox?

Jumping is a form of movement on Roblox. To jump, the player must simply press the space bar, the jump button if you are on mobile, or A if you are on Xbox. After the bar is pressed, the character will go up and then come back down. While coming back down, the characters arms will sway up.

How do you Double Jump on Gamepass?

Add Script inside the ServerScriptService. Basically add script and rename it to DoubleJump. Renaming is optional but name will help know what script it is.
Type this inside the script. I already include the explanations inside the script. Copy this script: