Yes, Vivo Y83 Pro does have the fingerprint scanner.
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.
Vivo Y83 Pro has the same aperture of f/2.0 on both sides of cameras.
Yes, Vivo Y83 Pro does have the FM radio support.
Yes, Vivo Y83 Pro does have the dual camera support. It has 13MP + 2MP dual rear camera.