Yes, Galaxy A50 does have the NFC support.
Yes, Samsung Galaxy A50 does have a 3.5 mm headphone jack.
During our test review, we got 145,408 AnTuTu score for Galaxy A50.
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.
Yes, Galaxy A50 does have the support for the face-unlock. Besides, it also has an in-display fingerprint sensor.