If the help is efficient and understandable, you will be placed in the “People who contributed to game systems” section in the game for which help is required.
There should be an option in the Game Settings of your Game to control avatar scaling. If not, you can just check for when the Character spawns and alter their scaling directly:
game.Players.PlayerAdded:Connect(function(plr)
plr.CharacterAdded:Connect(function(chr)
-- Something to do with changing scaling
end)
end)