After Joe Biden's decisive win in the 2020 Presidential Election, Donald Trump and many of his supporters continued to claim victory in the election, as well as accuse the Democratic Party of using voter fraud to illegitimately steal the election.
Yes, he will concede the election
Trump has no choice but to admit that he lost a fair and free Presidential election.
He's only pretending to think he won the election to delegitimize Biden's win
Trump and his top advisors are fully aware that Joe Biden won the election. However, they strategically plan on continuing claims of voter fraud to weaken Biden's presidency and draw from his influence in the White House.