How do i save value?

I’m making system which will look how much terraformers on planet is, and than more terraformers on planet is than faster color change tween is but the problem is it checks if previous planet was the planet that is right now and if its the other one planet then the script won’t just work for it, and will only work for the first planet. but i want to make it save how much on each planet there is terraformers. how would i make that in an easy way?

Full Script

local CelestialTerraformers = script.Parent.Parent:FindFirstChild("CelestialTerraformers")
local TweenService = game:GetService("TweenService")
local PreviousPlanet = nil
local TerraformersOnPlanet = 0

function ChildAdded()
	for i, Terraformer in pairs(CelestialTerraformers:GetChildren()) do
		if Terraformer:IsA("Model") and Terraformer:FindFirstChild("Active").Value == false then
		for i, Interactables in pairs(Terraformer:GetChildren()) do
			if Interactables.Name == "Interactables" then
				local Button = Interactables:FindFirstChild("Button")
				local Screen = Interactables:FindFirstChild("Screen")
				local Sound = Interactables:FindFirstChild("OxygenEffectPart"):FindFirstChild("Sound")
				local ClickDetector = Button:FindFirstChild("ClickDetector")
 
				if ClickDetector:IsA("ClickDetector") then
					ClickDetector.MouseClick:Connect(function()
						Terraformer:FindFirstChild("Active").Value = true
						ClickDetector.MaxActivationDistance = 0
						local TextLabel = Screen:FindFirstChild("SurfaceGui"):FindFirstChild("TextLabel")
						if TextLabel:IsA("TextLabel") then
							TextLabel.Text = "Preparing For Celestial Innovations OS Activation.."
							Button.Color = Color3.fromRGB(255, 133, 51)
							wait(1)
							TextLabel.Text = "Preparing For Celestial Innovations OS Activation..."
							wait(1)
							TextLabel.Text = "Preparing For Celestial Innovations OS Activation.."
							wait(1)
							TextLabel.Text = "Preparing For Celestial Innovations OS Activation..."
							wait(1)
							TextLabel.Text = "Preparing For Celestial Innovations OS Activation.."
							wait(1)
							TextLabel.Text = "Activating Terraforming Protocol."
							Sound:Play()
							wait(1)
							TextLabel.Text = "Activating Terraforming Protocol.."
							Sound.Volume = 0.2
							wait(1)
							TextLabel.Text = "Activating Terraforming Protocol..."
							Sound.Volume = 0.3
							wait(1)
							TextLabel.Text = "Done!"
							Sound.Volume = 0.5
							Interactables:FindFirstChild("OxygenEffectPart").ParticleEmitter.Enabled = true
							Button.Color = Color3.fromRGB(131, 255, 103)
							wait(1)
							TextLabel.Text = "Status: Active"
								for i, Planet1 in pairs(workspace.Assets.Worlds:GetChildren()) do
									if Terraformer:GetAttribute("Planet") then
										if Planet1.Name == Terraformer:GetAttribute("Planet") then
											local water = Planet1:FindFirstChild("Model"):FindFirstChild("Water")
											local surface = Planet1:FindFirstChild("Model"):FindFirstChild("Surface")
											if PreviousPlanet == Planet1.Name then
											TerraformersOnPlanet += 10 -- i make this amount bigger so that change duration will subtract more from 1 terraformer
											end
											PreviousPlanet = Planet1.Name
											Planet1:SetAttribute("ColorChangeDuration", Planet1:GetAttribute("ColorChangeDuration") - TerraformersOnPlanet)
											TweenService:Create(surface, TweenInfo.new(Planet1:GetAttribute("ColorChangeDuration")), {Color = Planet1:GetAttribute("TerraformedColor")}):Play()
											if water then
												while wait(1) do
												if water.Size.Y <= Planet1:GetAttribute("WaterSize").Y then
													water.Size += Vector3.new(0.1, 0.1, 0.1)
												else
												break
												end
												end
											end
										end
									end
								end
						end
					end)
				end
			end
		end
		end
	end
end

CelestialTerraformers.ChildAdded:Connect(ChildAdded)