How come not one movie has a 10 star rating only 2 movies have a 9 star rating the godfather 9.2 and Shawshank redemption 9.0

There are titles with perfect 10 ratings, but most of them have very few voters. There is one title with thousands of votes which still has a 10 average, but whether the rating is reliable is another story.

Most Voted Titles With User Rating of 10.0
http://www.imdb.com/search/title?user...

joseph monaghan asked about Movies with 10 stars (Peter's search covers any title):
https://www.imdb.com/search/title?title_type=feature&user_rating=10.0,&sort=release_date,asc...
and there are only 81 at this moment and only a handful have more than 10 votes.

Why? Because there are people like me on this site who assign a 10 to only a fraction of a percent of the films I've seen. I've rated 3700+, and given 12 of them a perfect score.

In high school, 90% was still an A, so 9 is excellent, and 10 is (near) perfect in my book. (Really none of the 12 are perfect either.)

On the other end of the spectrum, I've never given a 1 or a 2, and only one 3, because I can't sit through a movie that bad, and I don't think I should rate anything that I didn't view. What if it suddenly got better after I quit?

[Edited to add:]
And here are the 9+ ratings.
https://www.imdb.com/search/title?title_type=feature&user_rating=9.0,&sort=release_date,asc&...

Both searches come from https://www.imdb.com/search/title

The 2 films you cite are in the Top 250, so maybe you're asking for an explanation of that methodology. At the bottom of that page it says:

The Top Rated Movie list only includes theatrical features.

• Shorts, TV movies, and documentaries are not included
• The list is ranked by a formula which includes the number of ratings each movie received from users, and value of ratings received from regular users
• To be included on the list, a movie must receive ratings from at least 25000 users

Learn more about how list ranking is determined.