Primarily used in compounds such as 生鮮食品 (fresh food/perishables) and 生鮮野菜 (fresh vegetables). As a standalone adjective or noun, it is less common and sounds somewhat formal or technical.
This supermarket has a good selection of fresh food.
Please store fresh vegetables in the refrigerator.
This supermarket sells fresh food items.
Fresh vegetables are on display at the front of the store.