I am using VMWare fusion 12 with pro and player license on MacBook, macOS BigSur. I have installed windows 10pro in this virtual machine and trying to create the hotspot inside windows 10 using the default hotspot feature provided by windows10. I am not able to turn it on. My MacBook is connected to the wifi and I can use the internet inside windows10.
Let me know.
Your Windows 10 VM does not get direct access to the wifi network adapter.
Instead it is presented a virtual wired network adapter, where the wire is also virtual.
If you want to use this feature then you would have to use an external usb wifi adapter and pass the USB wifi directly to the the virtual machine.
The easier alternative is to use your mac as a hotspot instead:
edit: note that the article mentions that you cannot create a hotspot if you are only connected by WiFi (I don't know if this still applies, I never used this myself)