By default, when your carrier is selcted to be “Pick up in-store”, the Shipping Costs field is equal to “Free Shipping”. This is a bit confusing, as the customer may think you will ship the product to them. The field should be updated to value “0” to avoid any confuse.
To change that,
Go to your admin backend,
International -> Translations Type of translation = Theme tranlations Select your theme = classic Selction your language = English
Click on the “edit” button
Notification -> PDF -> Change Free Shipping Filed value to "0"
or, you can search “free shipping” to make the update as metioned above.