When starting out with Ludum Dare I myself got intimidated by all the posts of the ratings of all the amazing games. If you feel the same remember these points:

• Everyone started somewhere. To make this more visible I just published the scores of my first game back on the old website. The top rated jammers themself gained experience in Ludum Dare or outside of it.
• It may feel like the vast majority of games got into the Top 100/10, but thats obviously not the case!
• The ratings shouldn't matter too much. Try to learn something you can improve next time and apply it. You will improve your skills!