Hard to predict such things, but we'll go for it:
We find it more likely than not that the Supreme Court does not rule on the immunity issue before the 2024 election. This will allow the Court to defer making a ruling on a novel question of first impression (Presidential immunity from criminal prosecution) that will have significant consequences. Should Trump be elected, he will have the power to pardon himself. Should he lose the election, the Court can make its ruling after that time. The Court isn't in a rush to decide this issue, and such a strategy will keep it from making an election-altering decision. The Court is sensitive to its public perception and generally doesn't want to insert itself into electoral matters.