If what you mean is that the actual display panel is coming unglued from the display module, you can remove the entire panel carefully (making sure you don’t pull the ribbon cable from the module), remove all the glue, clean with alchohol, then use TESA tape (2mm worked for me) where the glue was to reattach the screen. I did this after my screen started to come unglued after too hastily removing the display module and it is good as new. Link to iFIXIT tape:
It may not be quite as protected from water because you can’t do this without removing a tiny rubber grommet around the screen, but with a case this won’t matter too much.