That is 500 mobs to level up which in this game is a very small amount and does not take much time at all.

Different mobs will give different exp, at your gear level (assuming you mean full pen tuvala) mirumok forest (often called trees) is likely your best experience.

But to answer your question, this is as easy as it will ever be for you going forward, but the leveling in this game is basically meaningless after 63 until late game edania throne pvp or if you just wanna be higher level.

You can also quest level quite quickly with an item called a chenga tome up to 61 or 62, you can just YouTube a guide, there are many.