A Contact Us section creates a sense of assurance that you are running a legitimate business. You can display a map that shows your store's physical location. It will also make your customers feel more confident about their purchase, since they know how to contact you if they have any queries regarding their orders.
Following is an example of a highly visible Contact Us section which is also easily accessible and will help you generate more sales.
Apart from having a contact us page, it is also a good practice to include social media handles so that the customers have alternative ways of reaching you. Some of your customers are likely to establish communication with you via social media handles like Instagram, Facebook, Twitter and so on. Therefore, make sure you add the social media links in the Contact Us section.