EVs and IVs are different things
1 IVs is Invidual Values and is something you cant breed. Theres a IV judge in almost every game and IVs says what that Pokemon specializes in.
EVs are Effort Values. That means that if you beat a Starmie you get a Speed EV. And there is HP SpAtk SpDef Atk Spe Def. If you are a lvl100 Pokemon you get 1+ in a specific if you get 4EVs . You can have a max of 252EVs in a specific stat. And you can hvave a otal of 510 stats.
Now in Gen6 you can super train and thats much easier