I have a bus, and it has many parts in it. I want the bus to leave when 5 people are in it, how?

-- Script 1
for i, v in pairs(workspace.Bus:GetChildren()) do
    if v:IsA "Model" then
        repeat wait() until v
        repeat wait() until v.Humanoid
        repeat wait() until game.Players:FindFirstChild(v.Name).PlayerGui
        repeat wait() until game.Players:FindFirstChild(v.Name).PlayerGui:FindFirstChild("LeaveBus")
        wait()
        game.Players:FindFirstChild(v.Name).PlayerGui:FindFirstChild("LeaveBus"):Destroy()
        game.ServerStorage.Camera:Clone().Parent = game.Players:FindFirstChild(v.Name).PlayerGui
    end
end
local model = game:GetService("Workspace"):FindFirstChild("Bus", true)
local rightSpeed = 0
local upSpeed = 0
local forwardSpeed = -2.5 
wait()
if (model ~= nil) then
local oldprimarypart = model.PrimaryPart
model.PrimaryPart = model.PrimaryPart
for i = 0, 288 do
wait()
model:SetPrimaryPartCFrame(model.PrimaryPart.CFrame * CFrame.new(rightSpeed, upSpeed, forwardSpeed))
end
end
end
wait(1)
end




--[[Script 2 (Script inside a part of the bus, when they touch this part it sets the parent of the character.)]]
local brick = script.Parent
local debounce = false

function onTouch(part)
    repeat wait() until part.Parent:FindFirstChild("Humanoid")
    repeat wait() until part.Parent:FindFirstChild("HumanoidRootPart")
    if not debounce then
        debounce = true
local player = game.Players:GetPlayerFromCharacter(part.Parent)
repeat wait() until part.Parent
    local human = part.Parent:FindFirstChild("Humanoid")
    local rootPart = part.Parent:FindFirstChild("HumanoidRootPart")
    local availableSpawnPoints1 = workspace.AvailableSpawns1:GetChildren()
        repeat wait() until human
        human.WalkSpeed = 0
        human.JumpPower = 0
        wait()
        rootPart.CFrame = availableSpawnPoints1[math.random(1, #availableSpawnPoints1)].CFrame + Vector3.new(0, 1, 0)
        table.remove(availableSpawnPoints1, 1)
        repeat wait() until player.Character.Parent
        player.Character.Parent = workspace.Bus
        game.ServerStorage.LeaveBus:Clone().Parent = player.PlayerGui
        wait(.2)
        debounce = false
    end
end

brick.Touched:Connect(onTouch)