As mentioned in PvP rules , Rotoms of more then 1 form in team is illegal , so my question is same applies for eeveelution ?eevee Form for more then 1 in same team is also illegal in PvP?

Eevee evolves, its not a different form while Rotom doesnt evolve and only changes its form.
So Rotom is the same pokemon regardless of its form while the evolutions of Eevee are differerent pokemon.

@Coffeeee

Greetings,
        I'd like to clarify what Norex stated before.  The Species clause is designed so that you cannot have 2 of the same Pokemon in one team.  How this is determined is National pokedex number.  The Rotom Appliances share the same National pokedex number (#479 I believe).  While the Eeveelutions all have different dex numbers allowing them to be used on the same team with each other.  I hope this clears up any confusion you may have with your PVP team building journey.  If you have anymore PvP questions Ill be glad to answer them or you can make another post in the PvP thread here at the forums.

My regards,
   Headphones

Thank you so much for the information.