It was a copy of the speech in a blue folder that he handed to her when he walked up to the dais. He also handed one to Pence.
Trump is required to report the State of the Union to Congress. That was the document he handed to Pelosi. I am sure it was an original with Trump’s actual signature on it. It was the document that was supposed to be entered into the congressional record. What she did was not only petty, it was illegal.