I’d try to run a hairdryer over it, to evaporate the water. That could work. There could be other water that you can’t see. Typically, with lcd screens, there is double sided tape along the edge of the screen. The lens sticks to that. I can tell that is the case with this because I can see that the screen is not flush with the lens. There is a gap. I’ve taken many devices, with screens, apart. I love doing that.
If it were me, I would remove those screws and carefully pry along the seam where the front and the back meet. Use something plastic for this, guitar picks are nice. A metal object would dig into the plastic. Be careful of the area where the buttons are. There may be some type of silicone membrane behind the buttons. Once the back is separated from the front, I would slide the backplate down the wire. There may be a screw, or two the hold the PCB to the face of the display. I would remove those. They may be different size screws from the ones removed from the back, so be sure to keep them separate. Then the PCB will be able to be removed CAREFULLY. Hopefully, water didn’t get to the PCB. There will be some type of wired connection between the PCB and the LCD. There may also be a wired connection from the PCB to the buttons. If there is a socketed connection, I would remove that to get the PCB out of the way. With the PCB separated, I should be able to carefully pry the double sided tape from the LCD and the faceplate. I would take my time, using a guitar pick or some other plastic flat thing, as to not scratch anything. Once that is done, I can dry the water out and begin to work in reverse to close it all up. This is what I would do if it were me.
If that didn’t work, then I just might look at getting a new controller and display. Probably a different display.
