I can help you with these if you decide to buy. Spending time supporting customizations with trial users is not my best use of it, I hope you understand.

Do you see the fields when you submit a new item? Make sure the fields are checked for search in the fields manager.

This has been asked several times and there are answers around the forum, but I tried finding them with no luck 

You can enable the review form for editors in the FORMS tab of jReviews. You have to define who your editors are for the purpose of jReviews in the REVIEWS tab.

There's another way of doing this as well, which has it's advantages and some users have opted for this. You disable the editor reviews and instead use the custom fields to create your rating criteria. You have to create some dummy criteria if you are not going to be using the user reviews.

1 - create field group for editor ratings
2 - create select list fields for rating criteria. Now you have to add the options to each field, a pain since you have 100 of them for each criteria! Since you are rating from  1 to 100, you are not going to create 100 images for the rating stars, so I am not sure what you do here. Maybe just display the rating value without images.
4- create dummy criteria, because it's required, and assign it the editor rating field group.

You are all set. When you submit a new entry, it will have the rating criteria as well. Now a content is also a review.

The benefits? you can search and order on rating criteria if you want to.