For example, if a person was on the blue team and they died, which changed them to the red team, what script would allow the game to recognize that there are no more players on the blue team and then execute commands.
Here's what I've tried
player.Character.Humanoid.Died:connect(function()
player.TeamColor = BrickColor.new("Earth green")
if #game.Teams.TeamA:GetPlayers() < 1 then
-- run code for what happens when it reaches 0
end
end)

1 comment
you could use #game.Teams.TeamA:GetPlayers() == 0; to test, you may put some sort of debug function such as 'print(args)'