I'd like to request the ability to display scoreboard values in GUI's. It's currently possible in single player by assigning scoreboard values to GLOBAL_SESSION variables but on multiplayer that doesn't work.
Issue comments
I suggest you to remember me again when the first 2020.2 snapshot will be released in this ticket: https://mcreator.net/tracker/issue/55702
I don't want to promise you this too soon as I need to get a better estimate when I can realistically add this, as syncing NBT to UIs is not that trivial.
Scoreboard values are not really intended for this. We are working on properly fixing NBT tags of player and ability to display them in UIs in this ticket: https://mcreator.net/tracker/issue/55702