how to get this cap?

Just do stuff. Some of dem are prolly gone anyway. When I joined the Pitch Perfect club, I thought I was gonna get a boné, cap but I didn't.

IHDK. (I don't know nothing about a laranja crush cap.)

Read this :
link

I'm not sure about the laranja Crush one, but I think it has to do with joining a particular club, or doing something in a particular club.

The fanpop birthday club has passed, as have all other date-related caps. They stopped making such caps a few years ago. I think they ran out of design ideas for them.

Showing amor just means becoming a fã of a certain number of contributions (videos, images, artigos etc). You just click the green button seguinte to the item which says "Fan of it?".

The good luck ones are completely random. But again, I'm not sure if those have been stopped.