You usually need to add token details to see your bounty tokens in your wallet. This includes the Token Contract Address, Token Symbol and Decimals. You basically add a new token to your coins list. At times, you get Bounty tokens by the end of ICO, so make sure it's notthe case. And I would advise you to ask all these things from the admins of projects, they usually help with such issues.
Thanks alot, Sorted