Regarding RFID Sensor

Do you know if Arduino Uno contains RFID(Radio Frequency Identification) sensors. I would need them, and I have Uno, so…also if someone could brief me on how to program an RFID sensor.

Do you know if Arduino Uno contains RFID(Radio Frequency Identification) sensors.

No, the UNO contains almost no sensor (the only one is the internal temperature sensor). BTW, that device is called an RFID reader (as it's not a sensor actually). You can attach an external reader to the UNO. There are tons of tutorials about how to do that on the Internet.

also if someone could brief me on how to program an RFID sensor.

you do not understand the culture here. we are not here to help you. we are here to help you help yourself. you look up similar projects in the Project Hub, investigate the examples in libraries, find specific things that baffle you, and ask informed questions which indicate that you have done your homework and expended thought and effort.

then, we help you.