OPR has MTTs and SNGs (36+ players), sharkscope has MTT's.
You can register for free at OPR which you need to do to see anything. Sharkscope gives you 5 free searches a day I think but you have to opt-in to see stars stats.
You need to search by nick and site. I don't think private tourneys are tracked and I don't really know how accurate they are. I know mine are way way off, not sure why unless it's a combination of withdrawals, using tickets won, and private tourneys and OPR doesn't agree with Sharkscope.
No one can really look up your stats for you unless you are very specific about what you want.