Yes, Vivo Y83 Pro does have the fingerprint scanner.
Yes, Vivo Y83 Pro comes with the earphone in the box. The other accessories include - power adapter, USB cable, protective case, sim ejector tool and quick start guide.
Yes, Vivo Y83 Pro does have the bokeh mode.
Yes, Vivo Y83 Pro does have the OTG support.
Yes, PUBG requires at least 2GB RAM and can run on Android phones with Android 6.1 and above. Vivo Y83 Pro has 4GB RAM and it is Android Oreo device. You can easily play PUBG game on Vivo Y83 Pro.