Value-based Lookalikes are an enhancement of Lookalike Audiences. They can be used to include an arbitrary, numeric value for each person. This is used to determine which people in the list are most valuable to your business, in a quantifiable way.
To create a dynamic value-based lookalike audience, click on the create dropdown menu and select New Dynamic Value-Based Lookalike Audience.
In this step, select the audience, source type, country, number of audiences and audience size.
You can create audiences for individual countries, or create country groups.
If you select country groups, several countries will be added depending on the group.
Or you can select Worldwide to include all countries.