The Acts of Arkansas can be found in multiple places depending on the time the act was passed and how it was incorporated into the Arkansas Code.
The Acts can be accessed via the state's legislative website at Arkansas Code Search | Laws and Statutes In this online database, it will be necessary to search by the name of the law or the section of the Arkansas Code you desire to use.
For more recent Acts, it might be possible to find them on the General Assembly website. This will only work for laws passed during or after the 76th General Assembly.
Historic volumes of the Acts can be found at the Center for Arkasnas History and Culture.