thank you , is file .board
it is generated and tied to a fixed number of bitcoins before being sent to me
maybe it's like a hardware wallet file
or the extension is not json
Strange way for someone to send you BTC, and it seems to me that it is very easily possible that it is a scam. The only way for a wallet recovery is a private key or seed, there is no file that can do this with a hardware wallet, and I guess not with an Exodus wallet.
Maybe you should try to ask the person who sent you that file how to get Bitcoins, even though the whole thing is pretty suspicious.