Steps to Generate App Password in iCloud Account

Sign in to your Apple ID account.

You will come to this screen.

Scroll down to App-Specific Password option.

Click on "Generate an app-specific password" option.

Enter the name of the application for which you want to create the app password. (You can add any name here).

You will now asked for your iCloud account password. Click on Continue button after adding account password.

Finally, your app-specific password will be generated. You can copy it and save it in a safe location.