Hi, does someone know something about Yelp and how much can I trust?

Hi, this is a website that supposedly helps you with the choice of restaurants or hairdressers. I wanted to try to use this company, but after reading the reviews about yelp, I changed my opinion about the company and decided that I would not use it.

Yelp is a business listing site, and people use Yelp to find services from there, and you can give a review about the services you used. Recently from yelp, I contacted one of the best dissertation writing services UK Company and had appropriately completed my dissertation. And I had also given a review of their business listing. You can also use that services.