No. Samsung Galaxy A20 does not have the IR sensor.
No. Galaxy A20 does not have the NFC support.
No. Samsung Galaxy A20 does not have the Corning Gorilla glass protection. However, the mobile does have a scratch resistant display.
Yes, Samsung Galaxy A20 does have the support for the FM radio.
Yes, Samsung Galaxy A20 does have fast charging support. It has USB Type-C charging port and the mobile comes with a 15W fast charger in the box.