There is no question that if this goes before the current Supreme Court, for whatever reason and regardless of the circumstances, they will rule in favor of Trump.
I disagree with you, it will depend on the circumstances. If it's like Bush v. Gore where it's extremely close and there's ambiguity, yeah the SC is fairly likely to rule for Trump. If it's a case where Trump is suing to stop the count of millions of absentee ballots in PA/MI/WI because he knows the election night results are a red mirage, no the SC would not rule to stop that. Those absentee ballots were mailed out and returned according to the states' election codes and invalidating them is tantamount to declaring the election invalid. It would be completely against any case law and the Constitution, would result in a civil war, and I refuse to believe that the Supreme Court would go that step.
No matter what we think of their judicial views, the justices Trump appointed are still distinguished federal judges and stewards of the Constitution. Gorsuch, Kavanaugh, and ACB are not Eric, Don Jr, and Ivanka.