Well, idk what it clasifies as, because the difinition of motorcycle vs scooter varries by state, but it appears to have all the requirements rto be registered.
Just goto the dmv, with the certificate of origin,the vin number and whatever ids you need, and get it registered, dont show them a picture of it, just tell them its a motorcycle you bought, or they may be stubborn about it.
Hopefuly, you will get plates and a registration card, if your register it as a motorcycles, you will probibly have to have insurance, try to register it as a moped instead, not all states require insurance for mopeds