Anyone in this world fully recovered from schizoprenia/psychosis?

Yes and no: Psychosis is a part of schizophrenia, but not all psychosis is schizophrenia and many forms of psychosis are fully reversible. Unfortunately, schizophrenia is a chronic mental illness and though the symptoms can be well controlled, there is no cure.

Yes: There have been a few cases where a person was diagnosed with schizophrenia and than sometime later, the person seemed to no longer have it for some unknown reason. Cases like this are few and far between. Most with schizophrenia will have the condition chronically.

Rare if ever: Schizophrenia, like moat all psychiatric disorders, is a diagnosis based on signs and symptoms, not physical testing. However, brain changes are present in research studies on schiz. These changes are not reversible. If someone with schizophrenia seems "cured", he/she most likely did not have it (but probably bipolar). The great mathematician john NASH of "a beautiful mind") is a probable example.