For listing all the business rules you can use the "Repository Info" node. If you want to get the rules and the tasks that are associated with jobs, then you will need to have the data governance capabilities, especially the process job allowing to export relationships (pj_export_lineage).
Need to connect to databases in SAS Viya? SAS’ David Ghan shows you two methods – via SAS/ACCESS LIBNAME and SAS Data Connector SASLIBS – in this video.