Web of Science is a collection of publication databases from Clarivate Analytics, which also offers citation data. Keeping a Web of Science profile is useful because it allows you to easily find up-to-date information about how your publications are being cited. Your Web of Science profile is public and visible to anyone who searches for your name on the site.
First you will need to find your author page on Web of Science:
Previously known as Publons, Web of Science Researcher profiles allows you both to control which publications appear in your Web of Science record, and to track your citation metrics, peer reviews, and journal editing work. To sign up for a profile, go to webofscience.com and register.
If you already had a Publons account set up, you can log in with the same credentials.
For more information about Web of Science Researcher Profiles, see the guide at this link.