game.Players.PlayerAdded:connect(function(p)
        p.CharacterAdded:connect(function(c)
        local hum = p.Character:WaitForChild("Humanoid")
            local bHeight = hum:WaitForChild('BodyHeightScale')
            local bDepth = hum:WaitForChild('BodyDepthScale')
            local bWidth = hum:WaitForChild('BodyWidthScale')
            bHeight.Value = 30 --some value u want
            bDepth.Value = 30 --some value u want
            bWidth.Value =  30 --some value u want
        end)
    end)