Yes, Galaxy A50 has an in-display fingerprint sensor.
Yes, Galaxy A50 does have the NFC support.
Yes, Galaxy A50 does have the support for the face-unlock. Besides, it also has an in-display fingerprint sensor.
No. Samsung Galaxy A50 does not have the LED notification light but it does have the Always-on display, so you can get notification alerts by any ways.
During our test review, we got 145,408 AnTuTu score for Galaxy A50.