There is a plethora of prima facia evidence, including the House J6 Investigation, that Trump incited and ordered the planning of the insurrection. If guilty, therefore, the 14th, section 3 applies.
The Supreme Court is the logical Constitutional branch to find a (former) President guilty of violating the Constitution. The evidence is so overwhelming, the Supreme Court should be able to decide the truth in less than a month. (Really a week, but other issues are on the docket.)
I assume the ruling is guilty, just based on public evidence. Therefore, Trump cannot become president and must drop out of the race.