I visited my profile in order to tighten the security a bit through 2fa, but I discovered another thing named "Shared secret (Base32)".
What does this mean and how does it work?
Is it like "A secret question"
The base32 is encoding format for your 2FA key, an additional security for your account. Anyone with that key can access your your account if they know your username and password or if they can access your attached email to your forum account.
This thread will help you set up.
How to use the 2FA feature on BitcointalkI had to blur part of the numbers out because it is called a secret, I don't even know if I was supposed to hide it.
Who is sharing the secret numbers with me - why it was called a shared secret.
I need direction, if it's something I can use.
Bluring security keys(shared secret keys) and think it's safe to upload on the internet is a bad practice, there is a way you can saturate a blurred image and you will able to see the content. I don't want to go to that guide. I will advice you remove the image of your keys from OP.