2. Also used counterwallet to transferred BTC to NVO site but its didn't show any balance of BTC which I have transferred to NVO site Is that normal ?
Yes.
3. If its normal when the crowdfund is over all I need to do is download and install NVO wallet in my PC and then key on my 12 wording private key in my NVO wallet then its will show the NVOT token which I crowd fund is it ?
You will see NVOT, after it has been distributed, on counterparty. IIRC the NVO wallet will also show it sometime later (not 100% sure). Do not use the demo wallet of NVO, as it is a
demo.