That's an old idea that has been tried several times before (such as the first, being Unvarnished: Website Lets You Review People (And Trash Them) | HuffPost, which no longer exists); and one of the latest incarnations is Peeple (mobile application - Wikipedia).
There are lots of legal liabilities, including defamation and harassment/stalking, even with the Section 230 of the Communications Decency Act | Electronic Frontier Foundation which (mostly) protects the website owner from others' speech posted on the site (your mileage may vary due to jurisdiction).
The only way such a site would survive is to do what Peeple and other sites have done: greatly limit the speech allowed, such as limiting to only positive reviews, giving the subject complete control over what does appear on their profile, only allowing "opt-in" profiles, verify identities, etc.
You would have to implement full GDPR compliance; but various lawsuits will either shut you down before you get far enough to launch or soon after and force you to greatly limit the scope of the site. Most lawyers would advise you to find something else to do with your time and money.