Is there escalators in the museum

There are a few in the East Building but none in the West building. However, there are elevators for all the levels. And if you have mobility issues, just tell one of the guards and they will make sure you have access.

Not that I recall. They do have elevators and a moving walkway for that part that connects the buildings.

There are more elevators than escalators in this Museum.

Yes, both escalators and elevators