i can’t publish my app even iit is free
All Android content published on Galaxy Store must be from a corporate seller it can be free but the seller must be a business and verified with a DUNS number.
For some countries such as the US it is just a matter of going to the local county office and getting a Doing Business As license. For other countries it is a bit involved and the DUNS number has a fee.
This is a very good thing for most Android app sellers on Galaxy Store but may be an inconvenience to a very few legitimate sellers who have a valid reason to only publish on Galaxy Store.
Samsung Developer Relations