Technically, there is no limit to the number of skills you can add to your profile on Matter. That being said, we recommend you add or create between 3 to 8 skills.
Who can use this: Every member on the Pro and Enterprise plans, or on any plan during the free trial, once an admin turns on performance feedback.
For an overview of the whole feature, read the Performance Feedback Guide.
As a new user, if you add more than 10 skills, it will take Matter algorithms longer to learn how to provide you with the highest quality of feedback.
Once you receive feedback from your teammates, you can add additional skills that you care about. Then repeat.