This plugin exports layout breaks to all parts to keep a similar layout in all of them.
It was created following this thread.

Usage:

Select a layout break already in place in your score and run the plugin.

Note that if you change the layout, you will have to run it again. However, it only adds breaks. This means that if there's already one, there will now be two. In order to properly update, you will have to go through each part, select a layout break -> select all similar elements->delete.
I strongly recommend setting a shortcut for select all similar elements in preferences -> shortcuts

Needs MuseScore 3.3 or higher to function.

Download For MuseScore 3.3

Installation guide:
https://musescore.org/en/handbook/3/plugins#installation