Yes, Nokia 7 Plus does have the 4K recording support.
No. Nokia 7 Plus does not support face unlock as of now. It is expected that Nokia will soon release an OTA update for it.
Nokia 7 Plus front camera is 16MP and it has an aperture of f/2.0.
Yes, Nokia 7 Plus does have the fingerprint scanner.
Great battery life, immersive display, solid design, and software at its purest, that's the Nokia 7 Plus for you.