I would like to know if it is possible to query database WFA from another server and on which port i can used for this?
it possible to found somewhere schema of database WFA ?
Yes it is possible there is a wfa user that exists and you can use the default port 3306 for MySQL.
Default credentials are wfa/wfa123
The latest schema is available directly within the help and is dynamic for all datasources, even if you add custom ones. Go to Help Support Links, then from the support links window click on the Reference Manual to the right side. From there you can view all your data sources and tables.