Per Currency Conversion:- This setting would not be visible to any product page, But If you want to notify to users that if they place an order they would be rewarded with some points, for this you can use the setting "Enter Ways to Gain Point Section" in General Tab. Whatever text you'll put in this text area it will get displayed to the User's "My Account" Page.
After enabling the setting "Enable Social Links" and select some social buttons, The social sharing button will get appears on the product page, post, etc.