Why don't it create the stars?

I made this script thats suppose to create stars in workspace all around the map but it wont work.

x = #script.Parent:GetChildren() - 1

while x < 20000 do
    wait()
    p = Instance.new('Part', Workspace.Stars)
    p.Size = Vector3.new(1, 1, 1)
    p.Material = "Neon"
    p.Anchored = true
    p.Locked = true
    p.CanCollide = false
    p.Position = Vector3.new(math.random(-300,300) - 4.5,math.random(-200,200) - 6.69, math.random(-300,300)+2.3)
end