The visa free regime allows you to spend up to 90 days in the Schengen area every 6 months.
Six-month periods are counted from the first entry into the Schengen area. For example, if your first entry was February 1, then you can spend a total of 90 days in the Schengen countries for the next 6 months, until July 31st.
You can use these 90 days during one visit or within multiple trips, but it is important to take into account the number of days you spent in the Schengen countries. It is important that after 90 days spent, you must leave the Schengen area until the 6 months after your first entry expire. Then the next six month cycle begins for you, where you can spend 90 days in the Schengen countries again.
There is no programme for moving to Sweden. There is a possibility to apply for a work permit, for a limited period of time, in case you found employer. If you have a spouse or minor child living in Sweden you may apply for family reunion with them. More about it you may find on the Migration Agency web page: https://www.migrationsverket.se/English/Private-individuals.html