The Supreme Court's generally staying out of the cases, leaving them as States' Rights issues (Never thought I'd say "States' Rights" in a positive context...). They acted on one if I recall, and it was a minor change to the proceedings that didn't actually affect the outcome of the race or whether States could certify.
What he's doing in the Middle East and to hamper Biden's transition is definitely worse than these court cases. He's pulling troops out of the Middle East and simultaneously trying to sell F-35 Fighter Jets to the United Arab Emirates, who have been involved in plenty of conflicts over the years, and aren't exactly friends with Iran, who we are currently a bit tense with.
He's either stupid and just sees this as a money grab (Kushner's been pushing for this deal, so I'm assuming the whole family benefits somehow), or he's sabataging Middle East peace talks (Specifically with Iran if I recall? Someone correct me if I'm wrong) to make Biden's job harder out of spite. Or, he sees it as a two-for-one deal. My money's on the latter.