[chrissix666]

Ps. I have also still not figured out how to scape rotten tomatoes scores, and Metacritic scores etc.

Then you have to find out.

Common solution SkinHelper (Only functional with Internet on and with a delay)
You have not made any setup on your SkinHelper AddOn.
Read Post #782 how to do that. 

Second sulution.
Use LocalInformationOnly Scraper, scrape your movies with .nfo files with a Media Manager, for example Media Companion, in the .nfo files you can get extended ratings data in it and read them into kodi.
Not recommended for laymen or people who take little time, it needs some training.