How do i make a block disappear when a player clicks it and reappear at a chosen time?

I'm trying to make a part disappear when a player clicks it and reappear at a chosen time does i'm absolutely clueless could anyone help?

You can make a block disappear using its Transparency property (1 is invisible, 0 is solid)

Option 1: UserInputService V1

In order to retrieve the mouse click only using code, it is considered best to use the UserInputService, so this should be done with a LocalScript.

The mouse being clicked can be retrieved using the UserInputType for the MouseButton1 (left) after which, you can call the mouse's Target to make sure the response is not nil (they are pointing at the sky)

Finally we check that the part is a BasePart (which are parts which have the Transparency property) and make it disappear

Using a debounce, this will prevent the player from removing multiple blocks within a certain time frame.

local player = game:GetService("Players").LocalPlayer
local mouse = player:GetMouse()
local debounce = true

game:GetService("UserInputService").InputBegan:Connect(function(input, event)
    if input.UserInputType == Enum.UserInputType.MouseButton1 and mouse ~= nil and mouse.Target ~= nil then
	    if mouse.Target:IsA("BasePart") then
		    if debounce == false then return end
		    debounce = false
		    local obj = mouse.Target
		    local original = obj.Transparency
		    obj.Transparency = 1
		    obj.CanCollide = false
		    wait(3)
		    obj.Transparency = original
		    obj.CanCollide = true
		    debounce = true
		end
    end
end)

Option 2: UserInputService V2

If you want to remove any part with a certain name, you can set this as your checking parameter instead of :IsA("BasePart")

local player = game:GetService("Players").LocalPlayer
local mouse = player:GetMouse()
local debounce = true

game:GetService("UserInputService").InputBegan:Connect(function(input, event)
    if input.UserInputType == Enum.UserInputType.MouseButton1 and mouse ~= nil and mouse.Target ~= nil then
	    if mouse.Target.Name == "SpecialPart" then
		    if debounce == false then return end
		    debounce = false
		    local obj = mouse.Target
		    local original = obj.Transparency
		    obj.Transparency = 1
		    obj.CanCollide = false
		    wait(3)
		    obj.Transparency = original
		    obj.CanCollide = true
		    debounce = true
		end
    end
end)

For Options 1 and 2, if you want the change to be see by all players, you will need to use a RemoteEvent as highlighted here:

Option 3: ClickDetectors

Finally, you can also remove parts every time a person clicks on them directly by placing a ClickDetector within them.

script.Parent:WaitForChild("ClickDetector").MouseClick:Connect(function(player)
    local original = script.Parent.Transparency
	script.Parent.Transparency = 1
	script.Parent.CanCollide = false
	wait(5)
	script.Parent.Transparency = original
	script.Parent.CanCollide = true
end)

In the above example, you can use a Server Script under a part that also contains a ClickDetector Each of the above examples use a wait(#) to detect how long the part should remain invisible