Water not pumping away

Since water doesn't drain out ,it could be a clogged in the drain line. Often the problem is at the point where the drain line attaches to the garbage disposer or household drain line. You should remove this line and clear it form any debris in the hose or the hose connection. Be sure to reattach the hose before starting the dishwasher again.
It could be as well a defective or a malfunction pump.
Let me know if you will need for further assistance.
Good luck!