Not heard of Oracle B1. Even searching google for it, just shows Oracle BI.
However searching for Oracle ERP on this community links to some of the "Cloud" related spaces, so maybe that's one of the ones you're looking for.
Some products are only supported through the "My Oracle Support" - Oracle MOS community (MOSC), which is for paying customers, so if you have a Customer Support Identifier (CSI) you should be able to gain access to that (My Oracle Support Community )
Without being familiar with the product you're referring to, it's hard for me to direct you to the correct place.