can i still get helium if i buy right now spread from bittrex?
No real answer right now. I know there was talk a while ago of a manual swap but I'd be careful, that isn't confirmed. If you buy SPR now on Trex there is no guarantee of a swap that I know of. Enter at your own risk.
No, you can't get HLM because the snapshot is over. HLM is already listed on Cryptopia, just waiting on the network to launch.