Can you show a brick's size on a TextLabel?

I'm making this silly game where you press X to increase the size of a brick. I've got that down, but I wanted to make a TextLabel on your screen that shows you the size of the brick. Is it possible to do this? If so, can someone tell me how to do it?

This pretty much does everything except grow the brick and save player data to DataStore...

Script in ServerScriptService:

local getPartForPlayer = Instance.new("RemoteFunction")
getPartForPlayer.Name = "GetPartForPlayer"
getPartForPlayer.Parent = game.ReplicatedStorage

local playerParts = {}

getPartForPlayer.OnServerInvoke = function(player)
	local t = tick()
	repeat
		wait()
	until (playerParts[player.Name] or tick() - t > 5)
	return playerParts[player.Name]
end

local function createPartForPlayer(player)
	local playerPart = Instance.new("Part")
	playerPart.Name = player.Name.."'s Part"
	playerPart.Parent = game.Workspace
	playerParts[player.Name] = playerPart
end

game.Players.PlayerAdded:Connect(createPartForPlayer)

game.Players.PlayerRemoving:Connect(function(player)
	-- Bonus: save their part's size in a datastore
	local playerPart = playerParts[player.Name]
	if playerPart then
		playerPart:Destroy()
		playerParts[player.Name] = nil
	end
end)

for _, player in pairs(game.Players:GetPlayers()) do
	createPartForPlayer(player)
end

LocalScript in StarterCharacterScripts:

local playerGui = game.Players.LocalPlayer:WaitForChild("PlayerGui")
local myPart = game.ReplicatedStorage:WaitForChild("GetPartForPlayer"):InvokeServer()

local billboardGui = Instance.new("BillboardGui")
billboardGui.Parent = playerGui
billboardGui.Adornee = myPart
billboardGui.Size = UDim2.new(0, 200, 0, 50)
billboardGui.StudsOffsetWorldSpace = Vector3.new(0, 2, 0)
billboardGui.ExtentsOffsetWorldSpace = Vector3.new(0, 1, 0)

local textLabel = Instance.new("TextLabel")
textLabel.Parent = billboardGui
textLabel.Text = myPart:GetMass()
textLabel.Size = UDim2.new(1, 0, 1, 0)

myPart:GetPropertyChangedSignal("Size"):Connect(function()
	textLabel.Text = tostring(myPart:GetMass())
end)

I'll assume you have the TextLabel on the screen already. Now, you have a couple options:

1. In the script that increases the brick's size, also update the TextLabel
2. Use an event to monitor the brick's size.

Both options use a LocalScript.

--Option 1
local brickSizeLabel = game.Players.LocalPlayer.ScreenGui.BrickSizeLabel -- obviously change to fit your situation
brickSizeLabel.Text = "starting size here"
--when you increase the size, say to "size":
brickSizeLabel.Text = size

--Option 2
local brickSizeLabel = ____ -- same as Option 1
local brick = _______ -- You have to figure out how the script knows about this brick. Does it have the same name as the LocalPlayer (or maybe is named "LocalPlayer's Brick"?)
brick.Changed:Connect(function()
	brickSizeLabel.Text = brick.Size.X
end)