hey whatthehell welcome

1 plant can produce anywhere from zero - to about 1oz dried (outdoor u might well do better). Some stuff to worry about :
1) Is it male - if it is u are screwed!
2) Slugs love it so buy some pellets
Best of luck! If you can get some more going stick them out too - the more you have the less chance of failure - just dot them around the place.
Hope it works for ya
TheWebguy