Should I register my music in my country to sell it in audiojungle?

Hi, I’m a beginner, I’ve never sold my music, I need help on this subject.

Can I upload my music without having been registered in the offices of the intellectual property registry of my country?

Is there a web page to declare that I am the author of the works I want to sell in audiojungle?

What can you recommend me about it?

You do not HAVE to do all this in order to upload your music here. But it is wise to register your tracks to your local P.R.O. office in order to earn money from royalties if your tracks ended up in TV or films

Thank you very much, this answer is very valuable to me.