I want to know, where can I find a set script selling Chivalrous Love III?

The easiest way is to simply take a walk and search (there are tutorials, so you can try them first), and many studios also sell them (you can search in QQ group). Remember, don't trust those who come to you on their own initiative. There are 9 liars in 10. Of course, as long as it is an auxiliary script, the risk of the title is not ruled out. If you are a player, please think twice.