'local GUI6 = script.Store' Line not being recognised?

I have recently got into scripting and I have got myself in a situation. I have made a line that reads "local GUI6 = script.Store" but above on another code it says its not recognised hence the blue line underneath it. Please help my asap

local Screen5 = script.Options.Frame
		local OptionButton = Screen3.OptionButton
	
		local PlayerGui5 = game.Players.LocalPlayer:WaitForChild("PlayerGui")
		PlayerGui5:SetTopbarTransparency(0)

		local GUI5 = script.Options
		GUI5.Parent = PlayerGui
	
		OptionButton.Activated:Connect(function()
			GUI5.Frame:TweenPosition(UDim2.new(0.387,0,0.365,0),"InOut","Sine",0.5)	
			GUI6.Frame:TweenPosition() ---Blue line underneath GUI6
		end)
	
	local Screen6 = script.Store.Frame
	local StoreButton = Screen3.StoreButton		
	
	local PlayerGui6 = game.Players.LocalPlayer:WaitForChild("PlayerGui")
	PlayerGui6:SetTopbarTransparency(0)
	
	local GUI6 = script.Store -------- Listed here
	GUI6.Parent = PlayerGui
	
	StoreButton.Activated:Connect(function()
		GUI6.Frame:TweenPosition(UDim2.new(0.371,0,0.173,0),"InOut","Sine",0.5)
		GUI5.Frame:TweenPosition(UDim2.new(0.387,0,1,0),"InOut","Sine",0.5)
	end)

Try this maybe work

local Screen5 = script.Options.Frame
local OptionButton = Screen5.OptionButton
local PlayerGui5 = game.Players.LocalPlayer:WaitForChild("PlayerGui")
local GUI5 = script.Options
local Screen6 = script.Store.Frame
local StoreButton = Screen6.StoreButton
local GUI6 = script.Store
local PlayerGui6 = game.Players.LocalPlayer:WaitForChild("PlayerGui")   

PlayerGui5:SetTopbarTransparency(0)
GUI5.Parent = PlayerGui5

OptionButton.Activated:Connect(function()
	GUI5.Frame:TweenPosition(UDim2.new(0.387,0,0.365,0),"InOut","Sine",0.5) 
	GUI6.Frame:TweenPosition()
end)
  
PlayerGui6:SetTopbarTransparency(0)
GUI6.Parent = PlayerGui6

StoreButton.Activated:Connect(function()
	GUI6.Frame:TweenPosition(UDim2.new(0.371,0,0.173,0),"InOut","Sine",0.5)
	GUI5.Frame:TweenPosition(UDim2.new(0.387,0,1,0),"InOut","Sine",0.5)
end)