2.6 BTC wallet stuck inside RAR file

[rosemarys11]

My wallet.dat file is inside RAR password protected file and I need some expert on how to recover rar file, I looked up on the internet and found this solution that by extracting the rar5 hash using john the ripper, I would be able to guess the password  using hashcat but I need an expert who can implement this theory without error, I lack the expertise and find it difficult to implement and willing to give you a percentage if I am able to extract my wallet. Let me know how much you will charge for this type of project?