Contentbot fields and Tab

It's not possible to display your own profile data to your self while not logged it, as Joomla/CB has no idea who you are at that point.

What I mean is for example if Bob (having userid 123) is Author of the article ID 456 and I would like publicly display his own user data inside his own article. This is possible to do by setting in article a substitution code who must contain the userid of Bob. But this require to manually edit each existent article. My goal would be to have a substitution who "detect" the data to display must be fetched by the same userid profile of the same author article.

do you see ?

You'd have to manually insert the substitution into each article. If you want it auto added to each article you're going to need to develop a custom Joomla plugin to append whatever you're wanting to the article.