Sculpted mesh unwrap

Can we uv unwrap immediately after sculpting, without going into tedious task of retopology? And the wrap the mesh, and put skin on it?

Any good tutorial for that?
It is not for gaming, it is only for animation.

Retopology is considerably ~more~ necessary for the purposes of animation then it is for texturing. You’re going to have to bite the bullet and just do it.

What if I svulpt a human face and dont want to animate it. It is just a static statue. I want to texture it. Can I unwrap it? And if I can, how?

If you’re not interested in animating a face, you can unwrap a sculpted mesh using the standard unwrapping tools. While I recommend that you check out some unwrapping tutorials, if you want to do it really quickly (and don’t care about the human readability of the results) you can use the ‘Smart UV Project’ tool, available from the spacebar menu. This will generate a quick UV set based on some simple criteria.