The SCOTUS ruled to uphold the ban on Tik Tok
Kevin O'Leary has a 20 Billion USD offer on the table to buy Tik Tok
Kevin said any company continuing to support Tik Tok in the US after the ban will face MAJOR fines.
Kevin said if Tik Tok does not accept the offer, he feels the real reason for the App would be to steal user's data, his opinion, not a fact that can be proved.
A Trump EO may not be able to overrule a law enacted the the US Congress that was signed into law. That would probably require quick action by the SCOTUS and I would guess the EO would be blocked, but just a guess on that.
So the risk for Tik Tok and any company supporting it in the USA (Apple and Alphabet, etc) is extreme because of the huge fine potentials.