That should be your private key.
Did you really get to understand what op ask before replying? The shared secret he speaks of relates to the 2FA authentication that was implemented recently on the forum. It has nothing to do with a private key or a wallet.
in account settings there is new features updated of shared secret (base 32) and some 24 digit *changed* 6IXID4EP4PG35LMHFLEXMKQJ apperead here is that important/ given Qr code too ?
Op, I guess you have been unaware of this new systems update by theymos. You can read about it here
2FA added. Then read how to activate it on your account on this thread by Husna QA
How to use the 2FA feature on BitcointalkYou aren't supposed to share this key
shared secret (base 32) and some 24 digit *changed*
with anyone else mate and i think you already did. It's a secret code, only you should be aware of. I will advice you to edit your thread and remove it.