If you mean that you uploaded one single image, it might be weeks, months or never before you see a sale.  There are a lot of buyers and a lot of images on offer; it takes luck and patience for your work to get in front of a buyer who needs what you have to offer.  And the more usable images you have, the better the chance that someone will find them and throw real money at you.  Small amounts at first, but still real.

With that said, I'd tell you that BigStock wouldn't be my first choice.  They produce a small fraction of the sales of other agencies.  I personally do more than 10:1 better at 123RF than I do at BigStock, and even better at Shutterstock.

Good luck.

Awesome thanks!

Hey Everyone!
   I am starting to sell some of my photos online. At the moment, I am trying to sell on bigstock. I've had my image up for a few days, and it hasn't made a single cent. Did I miss something? What do you guys think?
                Marz