How do I get this Robbery system to take the money that's "stolen" and store it in my DataStorage?

I've tried multiple methods but I just can't seem to get it to work, I'd really appreciate some support.

I absolutely do not want to use the standard ROBLOX leaderboard, but the moneySystem I've put together that makes use of ScreenGuis, sorry if this is a really simple fix but I'm quite new to scripting!

bankCashGiver

local debounce = false
local playerfound = false
local player = game:GetService("Players")

--local moneyData = Instance.new("Folder",game.ReplicatedStorage)
--moneyData.Name = "MoneyData" -- Once the game starts up, there will be a folder created in ReplicatedStorage.

local cash = game:GetService("DataStoreService"):GetDataStore("MoneyData")

--local dataStoreService = game:GetService("DataStoreService"):GetDataStore("MoneyDataStore")

game.Players.PlayerAdded:Connect(function(plr)
	--local plrCash = game:GetService("DataStoreService"):GetDataStore("MoneyData")
	--plrCash.Name = plr.Name -- Once the game starts up, a personal data folder will be created inside of "MoneyData."	
	
	local key = "id-" .. plr.UserId -- Requires a passcode in order to change, access, or modify data.
	
		pcall(function()
		saveData = cash:GetAsync(key)
	end)
	if saveData then
		cash.Value = saveData[1]
	else
		local save = {cash} -- This'll create a data table if the Player hasn't played before.
		pcall(function()
			cash:SetAsync(key,save)
		end)
	end
end)

function CreateRegion3FromPart(Part)
    return Region3.new(Part.Position-(Part.Size/2),Part.Position+(Part.Size/2))
end

function GetPlayersInPart(part)
	local region = CreateRegion3FromPart(part)
	local partsInRegion = workspace:FindPartsInRegion3(region,nil,math.huge)
	local Players = {}
	
	
	for i,Part in pairs(partsInRegion) do
		local player = game.Players:GetPlayerFromCharacter(Part.Parent)
		if player then
			
			for i, v in pairs(Players) do
				if Players[i].Name == player.Name then
					playerfound = true
				end
			end
			
			if playerfound == false then
				table.insert(Players,player)
			end
			playerfound = false
		end
	end

	for i, v in pairs(Players) do
		
		if Players[i].Robbing.Value == false then
			game.ReplicatedStorage.ShowRobberyGUI:FireClient(Players[i])
		end
		Players[i].Robbing.Value = true
		if Players[i].cashCollectedData.Value < 1500 then -- This is how much money the player can rob at a time.
			Players[i].cashCollectedData.Value = Players[i].cashCollectedData.Value + 10 -- This is how much money the player will receive every {number} second(s).
		end
	end
	return Players
end

while wait(1) do -- This changes how long it takes the player before the receive "Players[i].cashCollectedData.Value + {number}"
	GetPlayersInPart(game.Workspace.Detector)
end

DoorDetector (whenever you leave the building it would deposit the money into the account.)

local replicatedStorage = game.ReplicatedStorage
local MoneyData = game.ReplicatedStorage:FindFirstChild("MoneyData")

game.Players.PlayerAdded:Connect(function(plr)
	local MoneyData = game.ReplicatedStorage:FindFirstChild("MoneyData")
	local sourcePlayer = MoneyData:FindFirstChild(plr.Name)
	
end)


script.Parent.Touched:Connect(function(hit)
	if hit.Parent:FindFirstChild("HumanoidRootPart") then
	local player = game.Players:GetPlayerFromCharacter(hit.Parent)
		if player.Robbing.Value == true then
			game.ReplicatedStorage.HideRobberyGUI:FireClient(player)
			replicatedStorage.MoneyData.sourcePlayer.Cash.Value = replicatedStorage.MoneyData.sourcePlayer.Cash.Value + replicatedStorage.cashCollectedData.Value
			replicatedStorage.cashCollectedData.Value = 0
			replicatedStorage.Robbing.Value = false
		end
	end
end)

"Leaderboard"

game.Players.PlayerAdded:Connect(function(player)
	
	local leaderstats = game.ReplicatedStorage:GetChildren("MoneyData")
	leaderstats.Name = "MoneyData"
	
	local money = game.ReplicatedStorage.MoneyData:GetChildren("Cash")
	money.Name = "Cash"
	
	local cc = Instance.new("IntValue", player)
	cc.Name = "cashCollectedData"
	
	local robbing = Instance.new("BoolValue", player)
	robbing.Name = "Robbing"
	robbing.Value = false
	
	player.CharacterAdded:connect(function(char)
		player.Robbing.Value = false
		player.cashCollectedData.Value = 0
	end)
	
end)

Actual money GUI "LocalScript"

local player = game.Players.LocalPlayer

wait() -- Allows the Client to load in before the Server interacts, avoiding any corruption/crashing.
local moneyData = game.ReplicatedStorage:WaitForChild("MoneyData")
local playerCash = moneyData:WaitForChild(player.Name)

script.Parent.cashDisplay.Text = "$ "..playerCash.Cash.Value
playerCash.Cash.Changed:connect(function()
	script.Parent.cashDisplay.Text = "$ "..playerCash.Cash.Value -- Updates the GUI whenever the Player earns a new amount of cash.
end)

Any support would be heavily appreciated, been stumped for quite some time now! I should be able to provide any information if you need anything else.