Is it worth it making a framework all one script?

Right now I have an fps framework I am working on but recently I have come up with an idea of how I would be able to put all the client stuff into one script, and I would like to know if there would be an advantage other than having it all in one script?

I currently uses modules for most of the system and its functions so it would be easy to adjust it to all be in one script, I’m just not completely sure if it would be worth doing?