label
Override the default property label:
extends Node3D
@export_custom(PROPERTY_HINT_NONE, "label:Maximum Health")
var max_hp: int = 100
@export_custom(PROPERTY_HINT_NONE, "label:Health")
var hp: int = 100
@export_custom(PROPERTY_HINT_NONE, "label:Damage")
var dmg: int = 15
The text takes the rest of the entry whole, so a comma in it needs no escaping. Only a ; has to be written as \;.
Note
The label replaces the one Godot computed, which means it also gives up what Godot did to it:
the @export_group prefix stripping and the Property Name Style editor setting no longer apply.