What are the levels of master?


https://support.chess.com/article/1073-how-do-i-get-a-chess-title-grandmaster-im-etc

Open titles:
GM - Grandmaster
IM - International Master
FM - FIDE Master
CM - Candidate Master
Women’s titles:
WGM - Women’s Grandmaster
WIM - Women’s International Master
WFM - Women’s FIDE Master
WCM - Women’s Candidate Master
National chess federations are also able to award:
NM - National Master (often roughly the level of CM)
You can find out more about the rating requirements on Wikipedia or the FIDE website.
Hope that helps!

An ordinary WCM will have a rating of 2000+ FIDE. An ordinary CM will have a rating of 2200+ FIDE.