Right-click a viewport label. > Show Statistics
Keyboard > 7
You can quickly access various statistics related to your current selection and entire scene.
Note: These statistics are relevant primarily to mesh and poly objects. Some statistics information might be unavailable with certain other types of object.
You can customize the viewport statistics by turning on and off options on the Statistics panel of the Viewport Configuration dialog. The following statistics reflect all options turned on.
Polys —Displays the number of polygons in the scene and selection.
Note: This is valid only for poly objects.
Tris —Displays the number of triangle faces in the scene and selection.
Note: If you select a polygon in a poly object, this option shows two or more triangles.
Edges —Displays the number of edges in the scene and selection.
Verts —Displays the number of vertices in the scene and selection.