What are the maximum perk points in this game (without mods)?

[Retsal]

I remember it was 81, but I'm not sure...
Thank you.

[cfs111]

Unlimited as you can make a skill legendary. Once you reach 100 in a skill you can then legendary it resetting it to 15 (I think). Somewhere around level 250+ will give you all perks.

[WR3ND]

You can make a skill tree legendary after 100 to reset it to level more to gain more skills. It's pretty meta, but I typically use block for this.

[Ancient]

http://elderscrolls.wikia.com/wiki/Perks

There are 251 perks in the game. Originally, there was a level cap of 81, which meant a maximum of 80 perks were available. As of patch 1.9, this limit has been lifted with the addition of Legendary Skills. This addition grants the ability to level up past 81 by resetting skills trees back to level 15 (giving back any perks spent in that tree), thus gaining more perks and letting you level up infinitely and keep upgrading your health, magicka, or stamina which allows the player to have all 251 perks by level 252.

This still applies to SSE.

[Retsal]

Thank you all guys :)