Return to Answer

You could use something on this lines of /execute <at/as> @a[nbt={SelectedItem:{id:"minecraft:<id>",name:"<name>"}}] run <command> in order to run the command, replacing anything in <> with the appropriate option. You can run this as many times as you want, changing those 3 selectors, as long as those are in repeating command blocks, either constantly powered or with "always active" enabled.

You could use something on this lines of /execute at @a[nbt={SelectedItem:{id:"minecraft:<id>",name:"<name>"}}] run <command> in order to run the command, replacing anything in <> with the appropriate option. You can run this as many times as you want, changing those 3 selectors, as long as those are in repeating command blocks, either constantly powered or with "always active" enabled.

You could use something on this lines of /execute <at/as> @a[nbt={SelectedItem:{id:"minecraft:id",name:"<name>"}}] run <command> in order to run the command, replacing the minecraft:id with the id of the item, and replacing command with the command, along with putting a name in the blank "". You can run this as many times as you want, changing those 3 selectors, as long as those are in repeating command blocks, either constantly powered or with "always active" enabled.

You could use something on this lines of /execute <at/as> @a[nbt={SelectedItem:{id:"minecraft:<id>",name:"<name>"}}] run <command> in order to run the command, replacing anything in <> with the appropriate option. You can run this as many times as you want, changing those 3 selectors, as long as those are in repeating command blocks, either constantly powered or with "always active" enabled.

You could use something on this lines of /execute as @a[nbt={SelectedItem:{id:"minecraft:id",name:""}}] run command in order to run the command, replacing the minecraft:id with the id of the item, and replacing command with the command, along with putting a name in the blank "". You can run this as many times as you want, changing those 3 selectors, as long as those are in repeating command blocks, either constantly powered or with "always active" enabled.

You could use something on this lines of /execute <at/as> @a[nbt={SelectedItem:{id:"minecraft:id",name:"<name>"}}] run <command> in order to run the command, replacing the minecraft:id with the id of the item, and replacing command with the command, along with putting a name in the blank "". You can run this as many times as you want, changing those 3 selectors, as long as those are in repeating command blocks, either constantly powered or with "always active" enabled.