How do you imagine the world millions of years from now?

[Fireball]

Will humanity still exist? Will we have been replaced by a more advanced species? Will we become gods or primitive monkeys on the eyes of the next advanced species??

If we can move a certain numbr of people to other planet, how will society be at the start? Will we retain the social progress, or only the scientific progress and go back an anarchy? How many people will be left behind? Thousands, millions, billions? Will we ever find inner peace? 

DO YOU BELIEVE THE IN THE POSSIBILITY OF THE DETECTION OF LINGERING CONSCIENCES OF ALL WHO HAVE DIED THROUGH HISTORY, AND THE OPPORTUNITY TO REVIVE EVERY HUMAN BEING WHO HAS EVER LIVED? (wishful thinking)

Let your imagination go wild.

In that amount of time we will either be extinct or god-like. I have no idea what form we would take if the latter but I doubt it would be anything we would now even recognize as life.

It is theoretically possible to revive every human being who has ever lived because information is not lost. Whether or not there is a practical way to do it or not, I wouldn't hazard a guess. At some point though, advanced beings should reach the point where the only thing limiting them is the laws of physics.

Once a person dies, how is that "information" not lost? How do we even tell what is going on a live person's head, most of the time? How can that be recovered?

The only thing limiting us now are the laws of physics, and that's not going to change anytime soon, let alone in a million years.