running checkpoint system with rfid

hello everyone, I'm a newbie in Arduino. I have to make a project by using Arduino uno and rfid rc 522. basically my system is a webbased with php language . I wanna to get some guidelines on what hardware component that I need to used because I'm still blur with the flow and how to connect. As for now , I already bought the Arduino uno, rfic rc522, jumper wire, buzzer, breadboard, servo, and led light. I also wanna ask how can the system know which rfid reader have the runner past through. Thank you.

You will not get the range out of a RC552 reader to make this work. The range of these sorts of readers is only a few centimetres.
To get that sort of range you need a UHF rfid reader, these cost a few hundred dollars.

also wanna ask how can the system know which rfid reader have the runner past through.

You connect different readers to different pins so you know by which pins give you the signal what reader has detected the tag.