I'm looking for a Worms with a similar or with the actual classic Worms 2 Brazillian dub. In the store, it says that Worms 2 is in english only, and Worms World Party Remastered says only the menus are in Portuguese Brazillian. But in another post, someone from Portugal said that his game shifted to PT-Br dub automatically. So is there a Brazillian dub or not?

There is nothing else to translate in the game. There are no voiced campaign missions. The only voice works are the soundbanks, which have no real effect since there is hardly a storyline in this series.

Sorry, I should rephrase my question better:

In Worms Armageddon, for example, can you choose the PT-BR dub for the worms themselves? like "O primeiro de muitos" or "Toma!", like they spoke on Worms 2? And if I, brazillian, buy this game, will I have access to all countries' dubs?

The voice banks are all the same no matter what the display language is. However, there hasn't been a Brazilian Portuguese voice bank in Worms: Armageddon even in the original 1999 release, just one that's labeled "Portuguese". You should be able to create a custom voice bank using files from Worms 2, though.

The answer is yes. The frontend won't be in Portuguese like in some retail releases, but the voice schemes are there. It's called BrazilPortugal, it's the same classic PT-BR dub also present in WWP and WA.