You've been told several times... This is impossible!

If a passphrase was set, the "secret" wallet data (ie. private keys) has been encrypted using AES-256-CBC. If the passphrase was relatively complex (ie. 10+ 'random' chars using characters+numbers+symbols) and you have no idea what it was, then you can't possibly hope to bruteforce it.

However, if you have "some" idea of what the passphrase may have been (or you know 100% that it was relatively short or "simple"), you could potentially use "hashcat" and try to bruteforce the passphrase...

I would suggest using google to search for "hashcat bitcoin core"... alternatively, contact Dave @ walletrecoveryservices.com. They've been doing that sort of thing for a long time, have had a lot of success and have a good reputation. I believe that their standard fee is 20%. You can read their forum post here: https://bitcointalk.org/index.php?topic=240779.0