After the sun expands, can humans move to live on Pluto?

It's unlikely. Pluto is more than 5 billion kilometers away from the earth. If you want to fly there, you must bring enough water and food. Moreover, if there are billions of people in the world, if human beings still exist after the sun expands, it should be tens of billions. How big a spaceship does it take to carry so many people at a time? Moreover, there are no resources on Pluto that human beings need, and even if they move, they will never go to Pluto. There is little gravity on Pluto, and there is almost no atmosphere. Its surface temperature is more than 200 degrees Celsius below zero, so no one can live in a spaceship. Its year is equivalent to more than 200 Earth years. Besides, it seems to be about the size of the moon. One of our spacecraft may be bigger than it. For Pluto, it is "huge" so it is unlikely to move to Pluto.