Local script:

script.Parent.Submit.Btn.MouseButton1Click:Connect(function()
	for i,v in pairs(script.Parent.stuffs:GetChildren()) do
		game:GetService("ReplicatedStorage"):FindFirstChild("sciEvent"):FireServer("change", v)
	end
end)

Server script:

local info = {
	Arr = "N/A",
	Board = "N/A",
	Dep = "N/A",
	Flight = "N/A",
	Gate = "N/A",
	Plane = "N/A"
} 

if Args[1] == "change" then
		for _,v in pairs(info) do
			if v.Name == Args[2] then
				v = Args[2].Text
				print(unpack(info))
			end
		end
	end