I have been hacked

Hello Everyone,

I recentlybought a 15 euro's iTunes card. Now I got Some e-mails about payments in the game mobile lords of something, but I have never played that game whatsoever. I immediately enabled 2 step verification and changed my password. I dont care about that money but im concerned that hè has acces to a ton of information now. I created this Apple id a few days ago to buy Rome Total war in my iPad. But I could not download it. Does Anyone know what I could do and if I should be concerned about the hacker.

ps; sorry about my spelling my device autocorrects litterally every word.