When a profile has been verified, you have an extra indicator that the profile may indeed belong to a real person.
Photo verification is where a user uploads a photo of themselves posed in a particular way of holding a piece of paper with certain information included on it. Often, an actual human will review this – although there are also some software solutions for this task – and confirm that the person is real. Most apps will add a badge icon with a tick, shield or similar to indicate that a user is verified.
Profile verification is one of the measures used to try and reduce scams and fake profiles and to increase the security of a dating app.