Reputation Points...What are they?

Someone mentioned Reputation Points. I can't find any reference to such an animal anywhere on the site. I checked my profile; nothing there, so I figured if they were real I didn't have any (that's either good or bad, haven't analyzed that aspect as of yet), and I couldn't find anything anywhere. I have some "likes" (I am adjusting to that concept; all new to me) and no "dislikes", but nothing about my
Reputation...and I suspect I have one; not everyone on this site can say they haven't seen and heard the chaos I've left behind on other sites. Anyway, just curious!