Mango Mussolini is refusing to concede. His team has filed law suits in nearly, if not all, the states. So far most have been batted down by judges. And hilariously, some of their attorneys got in a tight spot. They filed these suits but ethics rules require candor to the court at all times and when the judge asked them if they had evidence of actual fraud, they had to decide whether to lie and lose their license to practice law or admit they had none. Which opens another ethics violation in the prohibition of knowingly filing frivolous suits.
In regards to vote count, Biden won by a huge margin in the popular vote. And by a sizable margin in the electoral college. In certain swing states the margin of difference between tRump and Biden was less than 1%. State law in some kicks in and a mandatory recount is done (and in the process). Dump's teams have filed suits in several other states with a larger margin, asking for recounts there too. The margins there are too big to overcome. Unreliable fake news and Russian troll farms keep posting about 'found' ballots, etc. but none of that has been verified and is just to get the Cult 45 up in arms. I believe that certain people in power would like to see a lot of violence in the streets so that the president can declare martial law, suspend the constitution, declare the election invalid, seat himself as president for life. That part is just a hunch.