I am trying to make players get teleported after time runs out. How do i fix?

Here is what i tried

local startime = script.Parent.Timee
local substraction = - 1
while true do
	wait(0.1)
	if startime.Value > 0 then
		script.Parent.Text = startime.Value.. ' Seconds'
		wait(0.5)
		startime.Value = startime.Value - 1

		if startime.Value == 0 then
			script.Parent.Text = 'Beginning'
			for i,v in pairs(game.Players.GetChildren())
				i, torso.CFrame.new = (0, 0, 0)
					
					
		end
	end
end

here is my output

23:08:34.180 - Plugin_276879563.HE-MONEY.LocalScript:4: '<name>' expected near '('
23:08:34.216 - Plugin_160457204.No Lag Script:7: 'end' expected (to close 'if' at line 6) near '<eof>'
23:08:34.578 - Workspace.True.Script:10: 'end' expected (to close 'function' at line 1) near '<eof>'
23:08:34.900 - Unable to find module for asset id
23:08:34.900 - Stack Begin
23:08:34.900 - Script 'Workspace.Kohl's Admin Infinite.Credit', Line 1
23:08:34.901 - Stack End
23:08:35.036 - Players.Player1.PlayerGui.Intermission.Backround.Time.Time Changer:12: 'do' expected near 'i'

There are a couple of problems with this. The obvious ones being the missing do and the incorrect syntax of your attempt to teleport the player. These can be easily remedied:

local startime = script.Parent.Timee
local substraction = - 1
while true do
	wait(0.1)
	if startime.Value > 0 then
		script.Parent.Text = startime.Value.. ' Seconds'
		wait(0.5)
		startime.Value = startime.Value - 1
		
		if startime.Value == 0 then
			script.Parent.Text = 'Beginning'
			for _,v in pairs(game.Players.GetChildren()) do
				v.Character.Torso.CFrame = CFrame.new(0, 0, 0)
			end;
		end
	end
end

Also, using a while loop here isn't good; once it reaches 0, it'll keep running without actually doing anything other than waiting for one tenth of a second. You should use a for loop, instead:

local startime = script.Parent.Timee
local substraction = - 1
for _ = startime.Value, 1, -1 do
	wait(0.1)
	if startime.Value > 0 then
		script.Parent.Text = startime.Value.. ' Seconds'
		wait(0.5)
		startime.Value = startime.Value - 1

		if startime.Value == 0 then
			script.Parent.Text = 'Beginning'
			for _,v in pairs(game.Players.GetChildren()) do
				v.Character.Torso.CFrame = CFrame.new(0, 0, 0)
			end;
		end
	end
end

While this code should work fine, it can be improved upon. Your substraction variable on line 2 is never used; might as well just remove that entirely. Also, you'll want to check if Character.Torso exists (better safe than sorry).
Since you're using a for loop now, you can remove the if statement if startime.Value > 0, as this will always be true.

You may want to add a Changed event too, in order to run this code whenever the value is updated:

local connection, update;
local startime = script.Parent.Timee
update = function()
	connection:Disconnect();
	for _ = startime.Value, 1, -1 do
		wait(0.1)
		script.Parent.Text = startime.Value.. ' Seconds'
		wait(0.5)
		startime.Value = startime.Value - 1

		if startime.Value == 0 then
			script.Parent.Text = 'Beginning'
			for _,v in pairs(game.Players.GetChildren()) do
				if v.Character:FindFirstChild('Torso') then
					v.Character.Torso.CFrame = CFrame.new(0, 0, 0)
				end;
			end;
		end;
	end
	connection = startime.Changed:Connect(update);
end

connection = startime.Changed:Connect(update);
update();

Hope this helped!
Read more about functions, signals, for loops, generic for loops, and FindFirstChild.

First of all you could do this a lot easier than what you are already doing by using a second for loop as shown

start_time = local startime = script.Parent.Timee

wait(1)
for i = start_time.Value, 1, -1
local starttime = i
script.Parent.Text = starttime.Value.. 'Seconds'
	if starttime == 0 then
		 script.Parent.Text = 'Beginning'
            for i,v in pairs(game.Players.GetChildren()) do
		if v.Character:FindFirstChild("Torso") then
                 v.torso.CFrame = CFrame.new(0, 0, 0)


	    end
        end
    end
end