how to teleport player after he clicks the button but i got a error attempt to index nil with torso?

Yo Try to use this script If your button is in startergui, then add the localscript inside button then use this script

local player = game.Players.LocalPlayer
script.parent.MouseButton1Click:Connect(function()

player.Character.HumanoidRootPart.CFrame = CFrame.new(--position)
end)

but if it on the part I recommend to use clickdetector, insert this script to clickdetector

script.Parent.MouseClick:Connect(function(plr)
plr.Character.HumanoidRootPart.CFrame = CFrame.new(--position)
end)

I hope this helps!