HELP WITH SCRIPT[RMXP]

hello everyone i want to try a new script it is a script for battle system and i have some question:
1.if i have script enchantment for my battle system,do i need the original script
for battle system first?
Ex:i have script enchantment A for my battle system but i need the original
script A without enchantment first for activating my battle system? or it is
okay if i don't have original script A for my battle system
2.where to put the enchantment script and fix scrip twill i put in the same page of
the original battle system(if i must have the original battle system)or i must
put in different page(so for the fix Script in different page and enchantment in
different page too)
3.where to put the script?

And i want to asking maybe this is really weird question how do you know the game make by Illegal and Legal RMXP and what the game is the best game ever made in RMXP because i need reference for making game so i hope with playing other game i get a little knowledge

Sorry for my bad english ^^a