Help with getting a 'player' from a SurfaceGui? [closed]

local teleportblock = game.Workspace:FindFirstChild("TeleportBlock")

script.Parent.MouseButton1Down:connect(function(teleport)
    player.Character.Torso.CFrame = CFrame.new(teleportblock.Position) 
end)

I have this inside a TextButton which is inside a SurfaceGui. I know this doesn't work, but what I'm trying to figure out is how to get the player, so I can teleport them to a certain block in the game.