You have to define better - more blur, less blur, take out hand?
No I mean to make the hand look more exact... I don't want to take it out
It would be really hard to make the hand not blurry. It is out of focus and the fingers are moving so you have 2 things to work on.
You could try filter/sharpen/unsharp mask and play around with that.
The easy way is to retake the shot.
And when you do retake the shot, make sure that you shoot faster, at 1/100th of a second or less.
This might mean cranking up the ISO, opening the aperture, or adding more light with a flash.
The faster shutter speed will reduce the blur, but if you want the hand to be sharp you will also have to increase the f/stop. Like to f/11 or f/16 would be better.
Put the camera on a tripod, and rest the hand on a chair out of sight if you need to use a lower shutter speed to make the shot.
Look everyone, I'm not talking about photography, I'm talking about editing the hand in photoshop
There's no magic answer.
There are some tools that claim to help.
Photoshop itself has Filter - Sharpen - Smart Sharpen, and one of the modes is for removing motion blur. It can improve images, especially for example if you have a lens that's not perfect out at the edges, but it's just not that good.
Another tool is called Focus Magic, a 3rd party app/plug-in which offers a Fix Motion Blur function.
Again, these things can help a little but you're not going to find a magic fix like they show on TV.