How To make an "20 Sec to next round" And do Se we getting tp in to the game?

I need help with it to my Disaster Game

--//** This will countdown from 20.

h = Instance.new("Hint", game.Workspace)

for i= 20,0, -1 do
	h.Text = "Round will begin in "..i.." seconds"
	wait(1)
end
wait(1)
target = CFrame.new(0, 0, 0) --//** Change the numbers to the position you want
for i, player in ipairs(game.Players:GetChildren()) do
	player.Character.Torso.CFrame = target + Vector3.new(0, i * 5, 0)
	
end