I think that I someone is pretending to be me an is collecting money that should go to me ( disability insurance claims game winnings etc.) but none of these things are reported due to lack of proof is there any way I can see what money has come into my name I can not report identity theft until I find the money that has been taken
There is no centralized database of all financial transactions made by each person. So it is practically impossible to be 100% sure that nobody is stealing your identity.
But one thing you can do which is pretty easy and informative is to ask a credit rating agency for a detailed report about yourself. In the EU that usually doesn't even cost you anything due to the GDPR. But in the US it's more informative because rating agencies are bound to less restrictions about what data they can collect. This should tell you if anyone made any contracts or took any loans in your name.
When you have a specific suspicion about someone impersonating you to a specific organization (like disability insurance or winnings of a game you participated in), then you can simply ask that organization about whether they have you on file and what data they have about you. In the EU, you can do that with a GDPR information request. You usually have to do these by letter. There are many templates available all around the Internet.