Nationals of the European Union (EU), the European Economic Area (EEA) and any third-country national holding a residence permit of a Schengen State do not need a visa to enter Sweden.
If you are travelling from some other country then the most suitable is to apply for a short-term visa (type C). It is issued for transit through or an intended stay in the territory of the Schengen States of a duration of no more than 90 days within the period of 180 days.
Please see more information about the visas
https://www.migrationsverket.se/English/Private-individuals/Visiting-Sweden/Visit-Sweden-up-to-90-days---apply-for-a-visa.html

A letter of Acceptance will be issued for all registered Authors which may be used for the Visa application, if needed.

Travel Information to Malmö

The best option to travel to Sweden is by plane. After arriving to Copenhagen airport it is possible to take a bus or train to Malmö. The bus stop is right in the front of the airport. The train station is about 50 m away.

What to see & do in Sweden

Please visit official website of Sweden.