Can someone or thing get a planter's wart on their head?

Yes. Warts can grow on your scalp. They are infectious too. This means that they can spread so you should go to your doctor for advice on how to get rid of them. A cheap cure for warts is to pour vinegar on them daily until they are gone. This kills it from inside. I know they are on your scalp but I'm sure you could find someone to help you do it.