The movie is over as soon as congress elects Biden. Even if clear, unambiguous fraud were presented after, Harris would be president elect, and then the speaker of the house, and then senate, and on down the line of succession.
Read the constitution. There is not a mechanism for trump to keep being president after Inauguration Day, no matter what happens. Those who keep hoping this is the biggest sting of all time need to go read the constitution and realize even if fraud were clearly proven, trump can’t remain president after inauguration.
This is it.