there is no script file
There is no folder in gta 5 game directory
How to get that folder
@bhyravaprints Read this please - it helps us help you https://forums.gta5-mods.com/topic/13256/how-to-ask-for-help-and-support
But you create a folder called 'scripts' in your GTA directory the same way you would create any folder in windows. then script mods go in here, asi mods go in the main folder. The readme that comes with all the mods will give you detailed instructions on how to install things.