It really depends on what you mean by work, a script that makes bets on your behalf based on a predefined strategy is quite easy to code on your own, so in that sense there are a lot of scripts that work, however if by that you mean a script that can generate profits over the long term with the game of dice then I am sorry to say this to you but there is no script that can do something like that, and even if there was you can be sure that the person that created such a script will never share it, after all who would be willing to give away a script that automatically earns money while you do nothing?