WHAT CAN I DO TO GET MY IPHONE TO WORK WITH THIS ACCOUNT?

I usually paid for an iphone but I had combined an comment for a opposite ipod.(an ipod, not iphone) It won’t let me put any song or anything on this brand new iphone since all of it is related to the alternative ipod. What can i do to all get absolved of anything carrying to do with the old ipod and have it so which my iphone is the usually thing itunes connects with?