You select File - View Current if you wish to view your Current Density data. You may open a browse window to chose the project whose results you wish to plot or select a project from the recently used list.
Once you select a project, a Current Density tab is opened with a current density plot of the chosen project's Current Density data. For more information on using the current density viewer, please see Graph tab - Current Density tab - Current Density Viewer.
You may also open a current density plot by clicking on the View Current button in the Sonnet task bar, then selecting "Browse for Project" or selecting a project from the recently used list in the pop-up menu which appears.