Local campaigns are designed to increase the amount of traffic you get in your store and increase its value by utilizing visits to stores (the campaign utilizes Google signals to determine users who have visited a specific place after seeing an advertisement) calls, clicks on the phone, and/or direction clicks. Therefore, there isn't any direct revenue associated with this campaign. However, the profit can be calculated using your business's data. All you have to be aware of is your conversion rate, the mean amount of in-store purchases and the amount of visits to stores that are reported by Google in connection with the campaign.