Pull out the drawers ,look up inside. There will likely be 4 to 6 wood screws holding the Top to the sides. They are likely Robertson ...square headed screws, but may be Phillips head. take them out and pry the Top off. It is unlikely that they used any glue and they certainly won't be dovetailed !
It doesn't matter if they are finished with CorIan or Arborite the Top will be a sheet of Plywood or Waferboard ,possibly K2 particleboard with a thin covering.
It will come off and it can be reinstalled. You may or may not have the skills to do the job.