You’ve probably all seen websites that showcase the reviews their customers have left for them on Yelp, Google Maps and other third-party websites. According to John Mueller, a Google webmaster trends analyst, it is perfectly OK with Google’s webmaster guidelines to take some of those reviews and highlight them on your company website. The only thing he warns you not to do is use review structured data on those reviews on your own website.
John said, “]F]rom a Google SEO point of view, I don’t see a problem with that,” i.e., using these reviews on your website. But he said you probably won’t rank better or worse because you did. Google will primarily look at the unique content on the page, as opposed to the copied reviews.