My question is, do you need a hunting license for the state if your just helping your buddy that does have a license and tag?
Check into the specific state /call their F&W dept... A lot likely hinges on what, specifically, 'help' includes.
You will have to check with the states regulations. Some states you can tag along to film or just sit with a hunter without a license but other states require a valid license. Depends on what state your going to?