Is it wrong 2 ask a psychologist (on sms b4 visiting)what kind of therapy he use 4 OCD&socialanxiety? Cz he blocked me when I asked him&what should I do

No it's fine. It lmay be hard to answer specific questions without seeing you for an initial session (getting history, symptoms). However, if a mental health professional refuses to answer general questions (who much experience he/she has in treating a disorder) what approach he uses etc. This may be a sign you should find someone else.
Training. There should be no problem asking any clinician about training and what informs his professional practice.