This may seem obvious, but motorcycle battery are usually stored without the acid until they are used. You add the acid, then charge the battery for an amount of time. Do you know the battery has a full charge?
If you have jumper cables (and you should), you can jump from a known good car battery. In addition, if you find that you don't have power while jumping, you can use a simple test light to see where power is getting. Are you getting power to the fuses, etc...
Understand that the battery could have 12v and not have the amps to do anything, that's the reason for a known good jump.
BTW, if you don't have jumper cables, you can make a set that work for you bike by using the size wire used on your battery or the starter. They aren't that thick and you can carry them with you so you can get a jump from another bike/car if needed (or just buy a small jump box).