If you are planning to move to Sweden, you should apply for a residence permit.
Information about residence permits on the Swedish Migration Agency's website
Moving to Sweden in 10 steps on sweden.se
The Embassy of Sweden in Bogotá is in charge of migration matters for applicants from Argentina, Paraguay, and Uruguay. If you have inquiries about migration matters or need to schedule an appointment related to migration issues, you should contact the Embassy of Sweden in Bogotá at the email address: ambassaden.bogota-migration@gov.se. It possible to visit the Embassy in Buenos Aires for some matters related to your case.
Information about Migration Services at the Embassy in Buenos Aires