No. They never applied for cert from the SC, only injunctive relief. There is nothing left. That is according to the lawyers I have been reading on Twitter (PopeHat and others)
Besides, so what? What they NEEDED in order to prevent the election from going forward was injunctive relief. It does them no good to wait until March for the court to hear the case. At that point, it's over, Biden is President. These morons don't actually think that the SC will rule that he's not President after he's sworn in, do they?