Hi Luis Castro,

"Working Days to Close" means the average number of working (business) days it takes to close a lead or opportunity, either as Won or Lost. 

It only counts weekdays and skips weekends or company holidays.

Example:

• A lead is created on Monday, July 1
• It is marked as Won on Thursday, July 4
• If July 4 is a holiday, and July 6 and 7 is the weekend, only July 1 and 2 are counted
• So the Working Days to Close = 2

How to find it in Odoo:

1. Open the Sales module
2. Go to Reporting --> Pipeline Analysis
3. In the top-right corner, click Measures
4. Select “Working Days to Close”
5. You will now see this value for each salesperson, stage, or team

Make sure your working time and holidays are set correctly in Settings ---> Working Time, so Odoo calculates it properly.