On the one hand, the Supreme Court has not been favorable, overall, to Trump's reelection. In 2020, they threw out a case brought by Republicans to have four Democratic states ejected from the election, for example.
But on the other hand, now with two justices' wives taking public actions to support Trump's reelection, it's really hard to take the idea of impartiality seriously. If you're the spouse of a justice, and if you took SCOTUS's work seriously, you'd sit it out. https://www.nytimes.com/2024/05/16/us/justice-alito-upside-down-flag.html