right below your fader in the mix window...it shows what level the fader is at. If you hold Cmd and click on the display it will toggle through a bunch of other display options. One of them is your plugin latency in samples.
Interesting you learn something new everyday. Thats a handy one I had a delay with ozones delay when in paragraphic Eq mode under digital (I think digital is phase coherent and the analog setting isn't) not sure though...