How do I measure the success of my Facebook product ads?

There are a few key metrics that you can use to measure the success of your Facebook product ads:

Reach: This refers to the number of people who saw your ad. You can use this metric to gauge the overall visibility of your ad.
Impressions: This refers to the number of times your ad was displayed on someone's screen. You can use this metric to understand how often your ad is being shown to people.
Clicks: This refers to the number of times someone clicked on your ad. You can use this metric to understand how well your ad is resonating with your target audience.
Conversion rate: This refers to the percentage of people who took a desired action (e.g. purchasing a product) after seeing your ad. This is a key metric for understanding how effective your ad is at driving sales.
Cost per conversion: This refers to the cost of your ad divided by the number of conversions it generated. You can use this metric to understand how much you are paying for each conversion.
Return on investment (ROI): This refers to the profit you made from your ad divided by the cost of your ad. You can use this metric to understand the overall effectiveness of your ad in terms of profitability.