No, it is not possible to use "Results" and "Cost per Result" as standalone metrics in Bïrch because they do not exist as separate metrics in the API.
Results is a general term for a specific outcome based on your campaign’s optimization goal. For example, if your goal is sales, "Results" may show the number of purchases. Learn more here.
Cost per result represents the cost of achieving a specific result, depending on your optimization goal. Learn more here.
What should I use instead?
Since "Results" and "Cost per Result" are not standalone metrics, use the specific metric related to your campaign goal:
Instead of "Results," use Purchases, Leads, Clicks, or another relevant conversion metric.
Instead of "Cost per Result," search for cost-based metrics like "Cost per Purchase" or "Cost per Lead" in the metric list.