MSFS is fully supported. No add-on scenery is available. However, the default scenery is usable although gate numbers are wrong.
As a workaround, you may use the map in the flight plan window to eyeball the gate or stand number of choice from charts.
Parking stands may not always match, particularly in case of Dhaka. You may use the following sceneries (freeware):
Pay-ware VGHS scenery is available on Simmarket and recommended: https://secure.simmarket.com/mfsg-hazrat-shahjalal-international-airport-vghs-2019-fsx-p3d-fs2004.phtml
The default FSX and P3D scenery are usable. There are a number of freeware scenery available on various flight simulation websites as well.