Hi,

I like to know how the point system in chess.com, like on-line, live game and tournament ?

what exactly do you mean... the member points or the rating system?

Rating points

Glicko system.

glicko

Please elaborate glicko system. thanks

Everyone starts at 1200.  If you win a game, your rating goes up by a number of points, based on your opponent's rating, your rating, and a factor called "RD", which is the Rating Deviation.  Your RD changes over time, and it's based on how many games you play over a "rating period".  The rating period can vary from several hours to several days, and it is based on how many games are completed by all the players in the group or site.

Hope this helps!