OK... it always helps to tell us where you are located. There are hardly any garden questions that can be discussed without regard to location/ climate.
But in the meantime. You said the tree was moved. Ficus are famous for dropping all their leaves when they get moved, especially if the light is different from where they were before. Be sure it is in a place where it gets plenty of light, like a good south facing window.
The good news is that since they easily drop their leaves, they easily grow them back. Your ficus is not necessarily dying and may well come back. Remember that without leaves, it is much less active, so taking up a lot less water. Cut back on the watering and do not fertilize until it is putting out new leaves again. So plenty of light, only a little bit of water, no fertilizer, and a lot of patience and your tree may be beautiful again.