I think you already got the gist of the story. Please document discreetly any attempt to injure you (take pictures) AND emotionally bully you (write down what he said with time and location). Be aware the emotional bullying can be subtle, it’s rarely “I’ll kill you” but more like preventing you to visit friends, removing phone privileges, giving you orders, limiting your bank accounts/ATM card access,…
I’m wondering if you met his family already because it’s a huge red flag if not.
You can do searches online about him, about his criminal history because that kind of attitude is usually not a one-time thing.
At this point the green card thing is the last thing you should worry about because you’re in charge there. Take care of your home situation first… Good luck and please stay safe!