How many coins are reward daily for masternode
Around ~200VSX
And it will lower all 3 Months
After 15 Months or so you get only ~15VSX a day
And our coins are fully safe if we join to masternode?
Yes your coins are safe. They are locked in your wallet after you setup the masternode. If you need the locked Amount you have just to unlock it, and you can spend it normally from your wallet after that.
How can I unlock this amount?
Thanks!
12. Can I unlock and spend VSX from my masternode?
Yes. Eenable "Coin Control" in the wallet options and go to "send" and click on "Inputs". You can then unlock the 250k and sent them, but you won't get rewards for that masternode anymore.
VSX FAQ -
https://bitcointalk.org/index.php?topic=2133048.msg27115624#msg27115624