Yes, Vivo Y83 Pro does have the face unlock feature.
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.
No. Vivo Y83 Pro does not have the NFC support.
Yes, Vivo Y83 Pro does have the dual camera support. It has 13MP + 2MP dual rear camera.
Vivo Y83 Pro has a scratch resistant display. However, it not confirmed by the brand that if it is Corning Gorilla Glass or some other technology they have used.