It was a full out recruitment platform many years ago. https://www.cnet.com/news/mindsumo-the-x-prize-of-hiring/

It would be sufficient for evaluation to just throw out obviously low-quality entries. About 80% of people who apply for any given job are not qualified for it. 80% of Mindsumo entries are garbage. It would be a major improvement just to throw out those applications. A journalism checker might just toss any applications which have more than 5 spelling errors.

Just as a demo about the quality of entries for these things, look at all the ones people are accidentally putting their answers in the comments. Notice how many people copied the same answer at the top of the comments and tried to submit it. https://www.mindsumo.com/contests/c19-impact-food-companies

The evaluation metric is going to be business specific. I'm not really sure what most jobs require an applicant to know.