polygon count

How can i get a polygon count of my mesh?

Click on the object and click the edit button, the decimator tool will show you the triangle number

select it (right click) and press TAB, then the numbers to the upper left will look like this:

(arbitrarily chosen numbers)

Ve 123-40 | Fa 40-30 | Mem:0.3MB Cube123

123-40 means 123 vertices in the hole scene minus 40 for the current selected mesh. same goes for faces.
thus your Object named “Cube123” would have 30 faces.