Where i make btc2 wallet..it some with btc adress dev.?? I want to join..but i dnt know about wallet
You can create a BTC2 address here for example: BitAddress.orgb
(For extra safety you can just in case download the page and use the generator offline so that the private key cannot be read by the website operator.)
The once the Bitcoin 2 Core wallet has been released, you can import that key.
But you can also let us know your BTC2 address later once the main net is live. Not writing that address in advance is not a problem.