Welcome!!
If you mean the barrel is loose when the action is locked up, it should go back to H&R for repair, most likely for a new barrel or the broken latch to be replaced, it may have been improperly fitted right from the factory, wouldn't be the first.
If it's loose when the action is open, it doesn't really matter, the forend spacer just needs to be shimmed, I use furnace tape cut just slightly smaller than the spacer so it doesn't show, use multiple layer to tighten the barrel, but not too tight, too tight will affect accuracy.
If you need to send it back, call em toll free (866)776-9292 and make the arrangements to have them cover shipping, they may replace the damaged stock too!!
Tim