For immigrants studying or working abroad, which is recognized, which is not recognized, or none of them is recognized in terms of academic qualifications, adult education or self-taught examinations?

Foreign countries only recognize China's "full-time unified recruitment" and "self-taught examination" academic qualifications, while other foreign countries do not recognize them. In addition, if you immigrate to a diverse country, sometimes you don't need a degree. You can choose "technology" or "literature and art" (you must have a skill first), or you can apply for investment immigration if you have money?