Champion League

How many player reched at champion state? 

83 advanced from Elite but I think only 51 are playing .

https://www.chess.com/leagues/champion

https://www.chess.com/leagues/champion/2GDnrTyCS

There should be over 150 that qualify.

The division posted by @justbefair is the first division.

I think this is the second: https://www.chess.com/leagues/champion/A1siBeU6

And this is the third:

https://www.chess.com/leagues/champion/35Ybk9Sfg

I also reached champion state...  Waiting for join other. I guess top 200 will get prize.  Is it true?  But how top 200 will be decided? 

It's the first 200 in Champion that get memberships. So you should qualify for that. My assumption is that prizes won't be handled until after this week to allow for checks on the qualifiers.

Higher league does not mean better players.

To get out of the Champ league you need to play more than 5000 games in a week. I don't want to, so guess I am here forever.

It will depend on your division. Some will need less, some maybe more.

Is there prize for qualifying to champions league?

Not any more. 

There were prizes for the first 200 to make it back in February.

Too much anyway. I am not a great chess player, but it may be a problem for a real chess legend to pass to the legend league.

The only players that had to provide any documentation were money winners.

Those that qualified for only the membership did not have to provide anything as far as I'm aware, they just got the membership applied to their account. But it doesn't really matter since the contest completed last month.