How do you teleport players when they click a button?

It'd probably go something like this, maybe it'll help you understand?

-- Declare a position to teleport to
local TeleportPos = Vector3.new(0, 5, 0)
local Btn = script.Parent -- Declare a variable for the button
Btn.ClickDetector.MouseClick:connect(function(PlayerWhoClicked)
    -- Teleport the Character of 'PlayerWhoClicked' to the Teleport Position 'TeleportPos'
    PlayerWhoClicked.Character:MoveTo(TeleportPos)
end)

Maybe use the MoveTo function?

Something like

function tpPlayer()
however.You.Find.LocalPlayer:MoveTo(x, y, z) -- Idk how to find players on clicks; I'm not good with tables or GetChildren for the matter
end

script.Parent.ClickDetector.MouseClick:connect(tpPlayer) --assuming the script is within the button and there is a ClickDetector in it

This is really crappy code though. I made it on an iPad at school :P