It is inevitable that Biden will be sworn in on Jan 20, 2021 @ precisely 12 noon.
An executive order by President Trump is not going to overturn the fraudulent results. The US Supreme Court by unanimous decision has dismissed all pertinent challenges. The NSA director written findings will be of no legal effect. The eventual outcome is not something I want.
The election was a sham for sure but Biden is holding all of the high cards and will ultimately prevail. The entire election process is fraudulently biased to favor radical liberal Democrats. Laws have to be passed and enforced to establish uniform election standards for each state and monitored by non-biased 3rd parties to secure a fair process regardless of those that are nominated by their respective parties and a standard legal process to quickly settle or dismiss unwarranted challenges. Of course, genuine reform will not happen during the upcoming administration.
The best that can be hope for is that Biden does not start WW3. The next 4 years are going to be an absolute disaster that will take years, if even possible, to recover.
My advice is to start stocking up on toilet paper. It's going to be the new US currency.