Hi,

This is the way to import the CSV ,

Step 1: Click on the "Import" link next to the red Create button

Step 2: Click the "Choose File" button and find your CSV file to import

Step 3: Match the fields from the CSV file to the fields in the drop down menus.

Step 4: Click the "Validate" button to see if any errors occurred. Correct any errors on the CSV file, save it, then reload the file by clicking the reload file button next to the "Load File" button

Step 5: Click "Validate" again. If there are still errors, then repeat step4, otherwise click the "Import" button.

Also you can check this doc, https://www.odoo.com/documentation/user/10.0/general/base_import/import_faq.html

Thanks