Hi,

You can archive a product when its status is 'Sale Order' by using an automated action.

steps:

1. Settings -> Technical- >Automation -> Automation rule

Model: Sales order 

Trigger: State is set to -> Sales Order

Click the 'Add an Action' button to open a popup where you can create a new action

Type: Update Record

2. Save the automation rule

Automatically archive the product when the state changes to 'Sale Order'.

Hope it helps.