Your first logged-in view of the SonarQube platform will be the Projects space, which defaults to showing your favorite projects.
From there, you may want to head to the Project Page of your current project, where you'll see all the primary indicators of quality gathered together. First, and most important, is the Quality Gate status. Does the project pass or not? From there, you can decide what needs to be worked on.
Or you could head to the Issues space, to see your personal leak, i.e. the Issues you've introduced recently.