Hi,

You can go through this official documentation for the same:  https://www.odoo.com/documentation/16.0/applications/inventory_and_mrp/inventory/management/reporting/inventory_valuation_config.html

Thanks

Hi,
Refer the blog:https://www.cybrosys.com/blog/what-are-the-different-types-of-costing-methods-in-odoo-16
The blog explains all the details of each costing method in odoo 16

Hope it helps