What does Shipping Label reward?

No reward has been recorded for Shipping Label yet.

What level is Shipping Label?

Its level has not been recorded yet; it shows once a player accepts it with the addon running.

Yes. Its quest id is not in Classic Era, so it is part of what Forever adds.

World of Warcraft: Forever · quest · new since Classic Era

A quest in World of Warcraft: Forever in Ironforge and turned in to Marcy Baker. Recorded by 1 player running the addon.

Level, giver, pay and objectives show once a player with the addon accepts the quest.

No reward item has been recorded for this quest. The offer window fills this in when a player with the addon opens it.

What does Shipping Label reward?: No reward has been recorded for Shipping Label yet.
Where does Shipping Label start?: It was picked up in Ironforge.
What level is Shipping Label?: Its level has not been recorded yet; it shows once a player accepts it with the addon running.
Is Shipping Label new in WoW Forever?: Yes. Its quest id is not in Classic Era, so it is part of what Forever adds.

Source: what players running the addon saw in the quest windows; the quest text itself stays in the game. Every quest seen · Ironforge