Can't find player via TextBox?

local label = script.Parent.Parent.Test
local inputLabel = script.Parent

local players = game.Players:GetChildren()


while true do
	wait(5)
	if table.find(players, inputLabel.Text) then
			label.Text = 'Success!'
		else
			label.Text = 'Waiting...'
			wait(1)
			label.Text = 'Failure..!'
	end
end

I have a TextBox where you can input the name, however, I always get the Failure option. How can I successfully check for the name of a player in the TextBox?

This is because the content of the array players is actually of type Player Objects, and you're trying to compare a string. Instead, you can reference the Player Object in the Players container via the Name and String:

local Players = game:GetService("Players")

local Label = script:FindFirstAncestor("Test")
local InputLabel = script.Parent

while wait(5) do
	if (table.find(Players:GetPlayers(), Players[InputLabel.Text]) then
		Label.Text = 'Success!'
	else
		Label.Text = 'Waiting...'
		wait(1)
		Label.Text = 'Failure..!'
	end
end