There are two warning signs when participating in a bounty campaign and these are new bounty managers with no reputation to protect and no accountability and can scam exit when a huge amount landed in their wallet for distribution.
Second, no disclaimer and a lack of information about bounty distribution if the team is the one who will distribute the token or if the tokens are on escrow.
Based on the information you presented here the two signs are present here, if there is no announcement of the distribution or you don't hear anything from the bounty manager, you have the option to open a scam accusation, this is to prevent future bounty to land in their hands.