nazeer,
A .qwc file is a proprietary extension for Quickbook files. Quickbooks has its own schema as well that is very difficult to map with other databases. I ran some testing with a connector called Consolibyte and i was able to successfully connect QB desktop to an online PHP database, but the database had to also be based on the QB schema (same tables, fields, etc.). Since Dolibarr’s database is not the same schema as Quickbooks, it is more difficult to map. You would need to find a developer to customize this for you.