that can be a pretty complex thing. We had our partner develop a special module for this. To do this, the BOM calculation is first carried out, and the manufacturing overheads are added to the result. This gives you the manufacturing costs. Then, various other surcharges (e.g. overheads for sales, development, etc. or even profit) are added via a configurable table and finally a gross price is shown. This module is protected by access rights, so that the individual factors are not recognizable for unauthorized persons.

by default, you will see bom cost, but it want update product(kit product cost or sales price).

# Charger les enregistrements de nomenclature associés pour le produit actuel
rec_boms = env[' mrp.bom.line'].search([('product_id', '=', record.id)]).mapped('bom_id')

for bom in rec_boms :
    # Charger le produit de référence de la nomenclature
    pour ref_prod dans bom.product_tmpl_id :
        prod = env['product.product'].search([('id', '=', ref_prod.id )])

        # Appelez la méthode Update Price from BOM pour mettre à jour le coût du produit
        prod.button_bom_cost()

Or

your_fields = fields.float(string='Prix de vente' ,compute='compute_your_fields', ...)

@api.depends('your_prix_de_vente_fields', 'your_service_bom_fields')

def compute_your_fields(self ):

   self.your_fields=  your_prix_de_vente_fields + your_service_bom_fields

self.your_fields= your_prix_de_vente_fields + your_service_bom_fields :changer ce formule selon ton methode de calcule .

Thanks 🥰🤔