Hi @Fahd Abrahams ,
Sorry to hear that you weren't able to get your app up and running. I assure, it's not that difficult. If you followed similar steps as I've done, you can enable to application logging on your app to determine what's causing your app not to start.
Other things to look at is to check to .listen(...)
to ensure App Service will bind to your node app. You don't need to specify host and use process.ENV.port so your node app will bind to the environmet variable. By default, this is 8080. If it's a dependency issue, you can adjust the nodejs runtime of your app service from the General Settings under the Confiugration blade. If any these don't help, let me know.