@OP, just like the rest been saying on trying out those wallet recovery service out there but of course stick into those known ones.
Just like been mentioned too that you should have at least having some small detail or information about the password
because if we are talking completely having zero information then consider these coins to be lost already. There's no way on cracking on this one i should say.
OP already said that he has no idea what the password is and I think that would be a challenge to the ones who will get the password. Since OP is willing to pay then I would also suggest to contact what OmegaStarScream recommended since there are others who offer the same service but not s legit one and should be careful contacting other services like it. I checked the image and it seems the balance is more than 6 btc so if it's recovered and have that balance in it then the amount to paid to the service or the person who recovered it will surely get paid unless there's no balance in it.