How does tax and payment work in dropshipping?

[AleksaAleksic]

Hello everyone, I want to ask a few questions in the hope that someone will be able to help me.

I have been studying dropshipping for a couple of weeks and I gained some basic knowledge, I made my own shop, chose a couple of products and decided to start with commercials and the whole process to start, but there is still one thing that really hinders me, and that is payment, taxes and how to sort it all out. I live in Austria and I am 18 years old, I have never had experience so far with taxation and the law, I don't know how it works with dropshipping, I only connected paypal payment services on my shop, because I need a tax number for the card and I don't know how. everything works. Do I have to have a registered company or is it just an option after all. Nothing about that legal side is clear to me. I hope that someone will be able to help me or at least send a link to a blog or youtube clip either from our area or abroad, any help is welcome.

Thanks to everyone who helped!