I'll try and help you to understand it a bit better.
Lets start off by breaking down your first post: is ash is he pokemon master now?
It is mentioned in many anime theories
Here you mention that there are anime theories, theories are usually opinion based, and not necessarily based on cannon content. Because you did not reference any of these sources by for example, quoting or linking(!) to said theories it also becomes very hard for anyone to determine otherwise.
Without any other context, or details, this sounds like it is based on a opinion, and you are looking to confirm said opinion.
The answer starts off nice, you convey that you tried to obtain the information directly from it's source, but could not obtain it.
However, the second part of your answer mentions a lot of theories. Yet again without any source of said theories. Just looking at the content tells me that it is most likely copied verbatim from some site. By not mentioning which site, you are actually committing plagiarism. If you wish to quote something, always refer to where you got it from.
Just as the answer, theories implies that it is 'opinion' based. And without any source to really confirm the quotes (manga chapters, episodes, wiki articles, author notes) it becomes really hard to proof otherwise.
Next up, lets cover How Professor ox discovered Ash's pikachu? it is a still Pokemon mystery
The title has me a bit confused. You are asking about a non existing professor, and follow it up by making a statement that it is still a mystery.
A good title would tell somebody that looked at it what the question is about. I think this would have made for a good title, if you would have omitted the part after the ?
You give a pretty elaborate explanation all though I have a very hard time tieing the knots together. Using some of the episodes as a reference as to when something happened, or manga chapters there where applicable would significantly help understanding your explanation there.
Later on in the spoiler block, you mention a theory, once again without a source, which goes and ask (3) different questions from what you tried to ask in your title. By the end of the question, I, personally, am still unclear on what you actually want to ask here. Did you want to know how Proffesor oak found pickachu? Or why pickachu didn't evolve? Or what happened ash was born?
All together it is a fairly confusing question.
Now just because the questions are closed, doesn't mean you won't be able to open them again. However you will need to improve them some what. In the help center you can find some more guidance on what makes a good question/answer as well. And as you have enough reputation already, you can also join us in the chat, where you can also ask people to help if they want and have the time.