could someone give me an idea of how many coins a masternode gets per day? - thanks
Rough estimate would be 20-30 synx per day. That depends on a lot of factors so it is very dynamic. But, it even out in the long run.
is there any way to get my coins out of bittrex and start my masternode or i need to wait for the fix?

From my understanding in the announcement that they made, you'll not be able to get your coins out of Bittrex until May 8th. I recently bought a lot of SYNX at Bittrex during its bear trend but can't withdraw from it due to the request of the developer. Guess we'll just have to wait for that swap.