it clones the taco but it isnt set int he position i tried to set it in Error: Position is not a valid member of tool
script.Parent.ClickDetector.MouseClick:Connect(function()
script.Parent.Size=Vector3.new(2, 0.20, 2)
delay(0.5,function() script.Parent.Size=Vector3.new(2, 0.49, 2)
end)
local tacoh = game.Workspace.Taco:Clone()
tacoh.Parent=game.Workspace
tacoh.Position=Vector3.new(math.random(-100,100),100,math.random(-100,100))
end)

2 comments
Model doesnt have a Position property, if you want to move a model either weld everything to a part and move that part, everything other then that part must be unachored or move each part inside that model indiviually
Models don't have a position property. Use :SetPrimaryPartCFrame() instead.