Hello @Abhishek_Verman ,
I think you are using simulator for testing. For getting the droneID follow the given steps.
Firstly go to the about section of your PC.
Now click on rename this pc button and rename the PC with “DESKTOP” name in its initial.
Now restart your PC and start the simulator again and connect to AeroGCS GREEN app and check whether the DroneID is getting fetch or not.
Kindly revert if any doubts.