How do i get my 1090 document ?

[xmasbaby0]

Do you mean a 1099?

There are about two dozen kinds of 1099's.  A 1099Misc is typically issued by an individual or business for whom you performed work as an independent contractor, so seek a copy from them if you did not save yours.  Many of the other types of 1099's are issued by banks, brokerages and other financial institutions from which you can seek copies.