Run PocketMon Engine Setup 0.1.0.exe (button above), choose an install folder, then open the created shortcut.
The installer is for 64-bit Windows. Since the executable isn't code-signed, SmartScreen may show a warning on first run — click "More info" then "Run anyway".
With Node.js installed:
npm install
npm start
You can also use the Abrir PocketMon Engine.vbs launcher. It clears ELECTRON_RUN_AS_NODE, a variable that can prevent the Electron window from opening when the app is started from VS Code.