No, from my knowledge there's no way of knowing who has the most bestiary points in the game it's not under highscores. You can't even see your friends bestiary progress even if you add them as a friend on Tibia. I know there's a tool to track your bestiary on a fansite here: https://tibiopedia.pl/monsters/mine (I can't read it too well I speak English but they have a nice chart You can share your bestiary with the creature name)your friends as long as your registered to this fansite you'll be able to access the tool. You can change the language on the website by pressing the books that are currently displayed on the north west corner of this page.