For example lets say
script = game.Workspace.Script --Just a example of what I want script.Code = Code.new(game.workspace,11)--Line number
and we wanted to edit it is there any variable for this?
No, you cannot edit a Script's inner code directly with another Script.
However, you can alter the "Disabled" property of another Script in order to turn them on or off, (which could effectively break a loop or prevent another script's function from being activated), as well as use Module Scripts to return called values to carry out functions within a different Local or Server Script.