World of Warcraft , Blizzard has removed the standard checkbox for disabling floating damage numbers from the default interface options. To turn them off now, you must use specific console commands or a specialized addon. Option 1: Console Commands (Best for no Addons)
The most direct way to disable damage numbers without installing extra software is by using the in-game console. By typing specific commands into the chat box, you can toggle the "Floating Combat Text" (FCT) off. Primary Damage: To hide standard damage numbers on targets, use: /console floatingCombatTextCombatDamage_v2 0 Healing Numbers: To stop seeing incoming or outgoing healing values, enter: /console floatingCombatTextCombatHealing_v2 0 Pet and Periodic Damage: how to turn off damage numbers in wow exclusive