Depending on how old it is, it wont have a VIN.
MD uses the number on the engine case as the "VIN" on older bikes..like my '47 Harley, for example.
In my experience, MD is beyond hopless for getting a "new" title for any vehicle unless its a boat or trailer. I use the out of state title companies on occassion and am, in fact, using one right now to obtain title to a vintage Triumph sports car I'm restoring.
It's a bit time consuming and its also expensive ..almost 800 bucks for the Triumph title work, for example and then I still have to pay to have it transferred to MD and then registered.