Man, this was harder than I thought..
Here's the official script... but it's only the first act. This was the most I could find, anywhere.
Some person is currently in the progress of making a fan script, but the last update was last month, so I don't think it'll be done anytime soon. A bit disappointing, but it's the best I could do!
No confirmed date for UK/rest of world. It’s speculated that they will wait until after the west end run has finished (currently due to end in Feb). I am in the UK and am going to buy a VPN service (like NordVPN or SurfShark, lots of streamers/YouTubers do brand deals with them so you can get a discount) to watch on Roku rather than stream illegally. I will still watch when it comes to the UK too!
the book by kevin murphy and laurence o’keefe it basically has the whole musical script. amazon link
https://www.amazon.com/dp/B07NYW4RL8/ref=twister_B07NZZZL3H?th=1
I found this raincoat, Idk if it's what you're looking for though, I think it would work :)