That question is often asked on here. Most will respond about a pound. Fact is no one can tell you what your yield will be. To many factors come into play.
Yeah it's fairly hard to guess yield from a photo especially if you don't tell us indoors/outdoors, what type of lighting. What you are feeding it. The strain is important. So many details needed to even guess at a yield.
Or you could just wait a little longer and weigh the results.
I am pretty sure its cheese dawg or deep cheese, its an outdoor plant, it didnt get very big, i havent given it any nutrients, just water and the sun.It survived spider mites (habanero water really did work) and being ripped out of its contained when it was a seedling by our pet piggy.