if you have pokerus and macho brace the ev gained are x4 so a bidoof who gives 1 HP Ev gives you 4 and you can get a maximum of 252 Evs per stat , and 510 total EVs
Ok EVs are effort values , each time you fight a pokemon you get some and each time you get 4 evs of one type ( attack/def etc ) you get one extra stat trough-out your levelling up
Good fight man , you are not really used to fighting eh ? me neither i just got lucky with absol's sword dance + sucker punch combo :) ( are your pokemons EV trained ) ?