I think that number of ratings that is zero is not related to the jam. It is the rating of your game in general, which could be given by anyone who plays your game, not just the jammers.
Viewing post in Ratings showing as 0 on analitics
thanks for your reply.
what is your game I will play it and rate ?
it would be wonderful if you could rate and leave a comment when you get some time .
https://itch.io/jam/brackeys-7/rate/1408598