Leaderstats Not Updating Properly? How To Fix?

So I am trying to make it so when my player clicks they get a coin. But the leaderstats are not updating.

This is my local script

game.Players:WaitForChild(game.Players.LocalPlayer, 20)

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()
local coins = player.leaderstats.Coins.Value

mouse.Button1Down:Connect(function()
	coins = coins + 1
	print(coins)
end)

The reason why this isn't working is because you can't edit values in a local script, the solution to this would be to use remote events to fire a server script, which would require you to put a RemoteEvent in ReplicatedStorage. From there, you would need to edit your local script to look like this:

RS = game:GetService("ReplicatedStorage")
RE = RS:WaitForChild("RemoteEvent")
game.Players:WaitForChild(game.Players.LocalPlayer, 20)

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()

mouse.Button1Down:Connect(function()
    RE:FireServer()
end)

Then, you would have to create a new script, which I would recommend to put in ServerScriptService, that looks like this.

RS = game:GetService("ReplicatedStorage")
RE = RS.RemoteEvent

game.Players.PlayerAdded:Connect(function(Player)
	Player.CharacterAdded:Connect(function()
		RE.OnServerEvent:Connect(function(lPlayer)

			if lPlayer == Player then

				Player.leaderstats.Coins.Value = Player.leaderstats.Coins.Value + 1
				print(Player.leaderstats.Coins.Value)
			end

		end)
	end)
end)

Please let me know if you need any help!

Edit: For some people in the comments, it's true that it can change locally, but I made it public as it was leaderstats. I also fixed the script where I believe it will now work.

You are updating a number and not a value.

game.Players:WaitForChild(game.Players.LocalPlayer, 20)

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()
local coins = player.leaderstats.Coins.Value

mouse.Button1Down:Connect(function()
    player.leaderstats.Coins.Value = coins + 1
    print(player.leaderstats.Coins.Value)
end)