Why is this Main Game Script not Working?

So this is a rather large game script that is supposed to manage the game. It doesn't work, and output isn't giving me anything. Can someone please help me?

Here's the script (Yes, everything in the script is defined):

local Maps = game.ServerStorage.Maps
local Mode = script.Mode
local MV = script.Map
local TDM = script.TeamDeathMatchScript
local TS = script.Time.Countdown
local SL = script.ScoreLimit
local msg = Instance.new("Message")
local USMC = game.Workspace.USMCV
local PLA = game.Workspace.PLAV
local Up = script.Time.TimesUp
local Play = script.Playing

while true do
	if USMC.Value == SL.Value or PLA.Value == SL.Value or Up.Value == true then
		script.Time.Hi.Disabled = true
		Play.Value = false
		MV.Value = "None"
		Mode.Value = "None"
		if Mode.Value == "TDM" then
			msg.Parent = game.Workspace
			if USMC.Value > PLA.Value then
				msg.Text = "USMC won!"
			elseif PLA.Value > USMC.Value then
				msg.Text = "PLA won!"
			elseif PLA.Value == USMC.Value then
				msg.Text = "Tie!"
			end
		if Mode.Value == "Domination" then
			msg.Parent = game.Workspace
			if USMC.Value > PLA.Value then
				msg.Text = "USMC won!"
			elseif PLA.Value > USMC.Value then
				msg.Text = "PLA won!"
			elseif PLA.Value == USMC.Value then
				msg.Text = "Tie!"
			end
		end
		if game.Workspace.Map ~= nil then
			game.Workspace.Map:remove()
		end
		msg.Text = "A new battle is beginning!"
		wait(1.5)
		NewMode()
		wait(2)
		NewMap()
		wait(2)
		Play.Value = true
		script.Time.Left.Value = 45
		script.Time.Hi.Disabled = false
	end
	end
end

function NewMode()
	local y = math.random(1,2)
	if y == 1 then
		msg.Text = "Map Chosen: Team Death Match!"
		Mode.Value = "TDM"
	elseif y == 2 then
		msg.Text = "Mode Chosen: Domination!"
		Mode.Value = "Domination"
	end
end

function NewMap()
	local x = math.random(1,2)
	if x == 1 then
		local Building = Maps.Building:clone()
		Building.Parent = game.Workspace
		Building.Name = "Map"
		msg.Text = "Map Chosen: Building!"
		MV.Value = "Building"
		if Mode.Value == "Domination" then
			Building.Flags:remove()
		end
	elseif x == 2 then
		local House = Maps.House:clone()
		House.Parent = game.Workspace
		House.Name = "Map"
		msg.Text = "Map Chosen: House!"
		MV.Value = "House"
		if Mode.Value == "Domination" then
			House.Flags:remove()
		end
	end
end

I'm surprised this isn't giving you an error, but NewMap and NewMode never get defined because of the infinite loop above them. Also, it looks like you have an extra end on line 51.

Looking at the loop itself a little closely, if that first conditional isn't met, the loop never waits, meaning you'll crash the moment the conditional is false. Change while true do to while wait() do to fix that.

I heavily suggest using Destroy instead of remove. Remove is deprecated.