There will also be a brief description of the facility and the amenities offered as well as prices as remembered from past experience. Some prices may have changed since I was there. Challenge is a ranking of how difficult the course is to play. There may also be a factor for how much skill it takes vs how much luck is involved in playing the course. Try to view it as if you don't play often when using this rating.
Variety is a ranking of how many other things are available to do at the facility.
Does it have any extras like batting cages or go-carts. I generally will keep courses that have a good variety of holes but nothing else around a 5-6 range. The more ammenities, the higher the score. Fun may be my most subjective item. Is the golf course too difficult to have a good time, or to easy.