You can't enter Argentina at the moment. The country is only open to citizens and residents. Eventually it will open up to tourists. When it does, you will be able to enter as a tourist for 90 days. When you are here as a tourist you will be able to investigate how to apply for a 12 month temporary residency as a rentista. It is EXTREMELY complicated to qualify as a rentista. You will have to return to your home country to gather documentation and then return a second time as a tourist with your documentation to start the process to obtain the rentista visa. Nobody would recommend that you try to obtain a rentista residency. Whatever your reasons for wanting to enter Argentina are, there are several other ways to try first.
