No, he didn’t.
Via White House Dossier:
Vice President Biden said Tuesday evening that Al Gore was the actual winner of the 2000 presidential election and that his willingness to abide by the law and accept the Supreme Court ruling giving the election to George W. Bush was an act of nobility.
Biden, who spoke at a Washington fundraiser for Senate candidate Rep. Ed Market (D-Mass.), added that most senators he has known over the years would not have made the same decision as the former vice president. Gore was also at the event.
From the press pool report:
“This man was elected president of the United States of America,” Biden said. “No, no, no. He was elected president of the United States of America. But for the good of the nation, when the bad decision in my view was made, he did the right thing for the nation.”