Have you ever published in a peer-reviewed journal? How is?

[Wigberto Marciaga]

Well, if you have ever published in a peer-reviewed journal, style nature, science, and others.

Which are the requirements? Did you have to have accreditation from a university? How long did it take you?

[swansont]

Yes.

The requirements are specific to the journal. As I recall, the process generally took several months for peer review, revisions and publication. Submission dates might be included in the article so you can check for yourself

e.g. a recent one from Phys. Rev. Lett. Published in April

“Received 7 September 2023  Revised 11 January 2024  Accepted 26 January 2024”