@bigboyhonghong
I have not played with this much myself, but since there is an existing macroscript for Simulation view in the list of actions via Customize>Customize User Interface, you can examine the code for opening the Simulation View by right clicking on it and selecting "Edit Macroscript."
Be careful though not to make changes to the existing Macroscript itself. Open a new window in the max editor and experiment with code in that. From this, I found that
FluidSimObjectManager.ShowInterface()
will open the Simulation view window and
FluidSimObjectManager.HideInterface()
will hide it if you have a liquid selected.
There is also a more complete description of Liquids with maxscript if you have not already seen it here:
https://help.autodesk.com/view/MAXDEV/2022/ENU/?guid=GUID-D0504863-171B-43E3-8229-31A8D13E7A9A