Like @anon67519447 suggested, you need to do some reading and research, but to give you a little head start.
Upload a photo of you access readers and your key card / fob
and / or
Try using this app to read your card / fob with your phone
Tag Info
OR
NFC Tools
to read your card
Check THIS if you are having problems, if no luck, Dont stress you may have a LF system/card, which is good news, as it is easier to get you sorted