Check if Player has a BoolValue?

I have this part where if you touch it,it will give you a BoolValue but if you didn't touch the part.You won't have a BoolValue that allows you to access this specific Key to make something work.

Now I already got that part down and finished but when you touch the part without pressing the Key before,It doesn't work.

My set-up

local projectile = Instance.new("Part")
projectile.Parent = workspace
projectile.CFrame = Char.HumanoidRootPart.CFrame

Main

UserInputService.InputBegan:Connect(function(Input, IsTyping)
 if IsTyping then return end
 local KeyPressed = Input.KeyCode
 if KeyPressed == Enum.KeyCode[Key] and Debounce and Char and Char.ChoseFreddy == true then
  Debounce = false
    wait(1)
  Remote:FireServer(Mouse.Hit)
  wait()
  Debounce = true
 end
end)

Adding in the Value

local db = true

script.Parent.Touched:Connect(function(hit)
    if db == true then
        db = false
    local Can = Instance.new("BoolValue")
    Can.Name = "CanUse"
    Can.Value = true
    Can.Parent = hit.Parent
    wait(2)
    db = true
    end
end)

I already made some variables for the ones that are not made by Roblox Studio.

I also just shortened the scripts,so no worries of the functions.I can assure you that I am doing this correctly.