Hey Steve,
It seems you're having a bit of a challenge finding the "Community" folder for MS Flight Simulator 2020 on your D:/ drive. I'm happy to help you out with that!
While the reply you received from another user does provide a helpful directory path, it may not be the one you're looking for since you installed the sim on your D:/ drive. The directory they provided is usually the default location when installed on the C:/ drive.
To locate the "Community" folder on your D:/ drive, follow these steps:
Open the MS Flight Simulator 2020.
From the main menu, navigate to Options > General > Developers.
Enable the Developer Mode by toggling the switch to "On."
Now, you will notice a new menu bar at the top of the screen. Click on Tools and then Virtual File System.
In the Virtual File System window, you will find the Watched Bases section. Here, you should see a path for your "Community" folder, which would look something like this:
D:\WpSystem\S-1-5-21...\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache\Packages\Community
Please note that the string between "S-1-5-21" and "AppData" will be unique to your system, so make sure to copy the exact path displayed on your screen.
Now that you have the path to the "Community" folder, you can use it to install additional scenery or add-ons. Once you're done, don't forget to turn off the Developer Mode by going back to the Developers settings and toggling the switch to "Off."
I hope this helps you locate the folder you need, Steve. Happy flying!