Looking to renew my sub but will be transferring to a high pop pvp based server for arenas and battle grounds. Does anyone have strong knowledge which is the most popular pvp server? Back in the day when i played around warlords of draenor came out it used to be Darkspear.

There are no pvp servers anymore. If you want high pop I reccomend. Illidan, tichondrius, area52, emerald dream or kel thuzad. There is now a thing called warmode that you toggle on or off for wpvp

I know there arent any pvp specific servers, I mean to say any servers in which are known for pvp. Perhaps the best pvp players to the server where people go to just play what I mentioned.

probably Tichondrius for horde, or Kel'Thuzad for Alliance.

nobody really plays on pvp servers anymore, just go to area 52 horde or tichondrius horde
there hasnt been real pvp realms since like wod/mop iirc

Theres gotta be a server where all the pvp homies go. Should be pretty known or at least talked about. Tichon seems to be the winner.

Illidan (retail)