Regarding a social security number for the USA, you might find you need a work visa or greencard and thereby a sponsor (employer) to get a SSN. I am currently being processed for a greencard so I can work in the USA and I was told by Social Security I wouldn’t be issued with a SSN under any other circumstances as I’m not an American citizen or resident. A USA based greencard lawyer may be helpful but I suggest caution, my experience in this suggests there are many willing to part you with a substantial amount of cash for little return. It’s a very long process either way. Good luck.