As far as I understand, there is no problem in selling script.

I just don't think it should go under asset, but under "game development"

We have to follow Itch tos to sell and be 18+. As soon as we sell here, we have to meet the standards a small business must meet, like doing a tax interview and whatnot. Even with that execption about parental permission, this is still rather complicated.

I have a hard time believing anyone can write something that is called a script, that anyone else would buy. If it has the level of a software solution that people are willing to shell out money for, you would no longer call it a mere script.