PrestaShop 1.7.x. How to manage store title and contact information

1. In your PrestaShop admin panel go to Shop parameters -> Contact section: 
2. Choose there a Stores tab. Scroll down to find the Contact Details section. Here you can set such contact details:
   • Shop name – the title of your store.
   • Shop email – the official e-mail address.
   • Registration number – company’s legal registration number which depends on your country’s legal system.
   • Shop address line 1 / Shop address line 2 – the official contact address (es) of your store.
   • Zip/postal code – the postal code of your store.
   • City – the city of your store.
   • Country – the country of your store.
   • Phone – the contact phone number of your store.
   • Fax – the fax number of your shop.
3. Click the Save button to save the changes.

Hopefully, this tutorial was helpful for you.