1. This is NOT official method to run UEFN, this is bunch of tricks and hacks to make it run, but you will still probably have some issues.
2. Method will not allow to you run latest version of Fortnite on your macOS. You will need additional device to use it as destination device.
3. Initial test was performed on M1 Max 64GB laptop, so performance on your Macintosh may vary.

1. macOS Sonoma (or higher)
2. Heroic Launcher
3. Codeweaver's Crossover (you can download trial, to see if performance is good enough for you)

1. Install Crossover
2. Create Win10-x64 bottle called "UEFN" (name is important, since it will be used in next steps
3. In right panel "Advanced settings" section enable following flags:

• D3DMetal - On
• Msync - On
• High Resolution mode - On

1. Install Heroic app
2. Run Heroic app
3. Authenticate with your Epic credentials.
4. Go to "Library" section.
5. Press download icon on "Fortnite":
6. In installation pop-up select folliwng options:
   1. In "Platform Version to Install" picker in the bottom of screen choose "Windows" option.
   2. In "Wine version" picker "Crossover - ".
   3. In "CrossOver Bottle" textfield put "UEFN"
   4. In "Select Install Path" press button to select path, then go and select path ~/Library/Application Support/CrossOver/Bottles/UEFN/drive_c/Program Files
   5. Press "Install"
   6. In "Anticheat Broken / Denied" popup press "Yes, I understand"
7. Installation will begin and will take sometime depending on your network connection.
8. When installtion is done you

1. Open Crossover app
2. Select "UEFN" bottle
3. Press "Run Command"
4. Folder view should open and you need to go to: C:\Program Files\Fortnite\FortniteGame\Binaries\Win64 and select UnrealEditorFortnite-Win64-Shipping.exe
5. Press "Save Command as a Launcher"
6. "UnrealEditorFortnite" should appear in your bottle

1. Run UEFN through "UnrealEditorFortnite" icon in "UEFN" bottle
2. Wait till UEFN opens "Project Browser"
3. Important! When you syncing your project or creating new project, make sure your path does not contain spaces. I have my projects in "C:\FortniteProjects" folder.

Currently, Windows version of VS Code does not work under CrossOver, so what can you do is install VS Code for macOS, and install "Syntax Support for Verse" plugin for it and open it at path:

~/Library/Application%20Support/CrossOver/Bottles/UEFN/drive_c/FortniteProjects/<your_projects_folder>/

1. Open "CrossOver"
2. Select "UEFN" bottle
3. In right panel select "Run Command"
4. In "Running" row put "cmd.exe"
5. Press "Run"
6. Enter in "cmd.exe": set PATH=%PATH%;C:\Program Files\Fortnite\FortniteGame\Binaries\Win64
7. You can use URC CLI now

Unfortunately I did not found direct solution for this issue yet. Only thing I can suggest is browse props via Fortnite client running on your device and paste assets from there.