How to acces the players JumpHeight

So I am trying to make a loop that goes up to 10, and every time it increases by 1 the jumpheight of the character does too. I have the text countdown down I just need to figure out how to access the JumpHeight of the character ingame
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Im very new to scripting. (local script)

You’ll probably want to edit the JumpPower of the player’s character’s humanoid.

Is this a Server Script? If so, then use:

for i, plr in pairs(game:GetService("Players"):GetPlayers()) do
plr.Character.Humanoid.JumpPower += 10
end

No it is not a server script it is a local script

Then use RemoteEvents. Setting the JumpPower on client wont affect others.