He won't be forced to make the purchase because the court will determine that will cause more harm to Tesla shareholders than benefit to Twitter shareholders. The litigation will probably take about 10 years though. That's according to Andrew Torez from the Opening Arguments podcast.

He’s going to end up buying Twitter but it will be at a discount due to the bot numbers. My prediction is he ends up leading a group of investors to purchase it for roughly $35 billion.

I don’t understand why you think this would happen. Whatever Twitter would agree to, Musk would rather overpay by $10B with other investors and own Twitter, than to pay a $10B settlement and own nothing. And if it were a small enough settlement without an acquisition, Twitter investors would miss out, and Twitter’s management would be embroiled in shareholder lawsuits.