Official answer: The GC was designed to specifically not disclose the exact scores in points. The progress bars are what you get.
You can use your team GC standings page to see your own progress bar at the same scale as the one used in the top 100. Use a ruler or a screenshot plus a pixel count to compare

Also, at a division boundary, you can just compare your graduation date with that of the #100 to see how many days you are behind. Near the end of the game, the "top in division" for #9 will help you check (make sure to adjust for HC immortals!)
Unofficial answer: There is a way to figure out exact scores and thresholds in the GC, but it requires a bit of computer skill and math. I'll just say that it can be done with any major web browser without any add-ons. If you do figure it out, have fun, but please keep your results and techniques to yourself - thanks
