If the ACA is Unconstitutional, that has nothing to do with Trump or Biden, the Democrats or the Republicans.
It has to do with the law, and if our system allows it.
Of course, if it is unconstitutional , Congress will propose to replace it. If Biden gets in , the replacement will be the Fully Socialized system the lib base wants. You like your current doctor and plan? Tough shit.
You will go to government clinics.
If Trump gets in, then he will repropose Trump Care, Tremendous, quality care with unbelievable savings and unlimited choice. Heaven on earth, you will wish you get sick.