In order to translate the Product Attribute and Attribute Options Labels do the following:

1. Navigate to Stores > Configuration > Attributes > Product and choose the attribute you want to translate.

Magento 2 product attributes

2. Set the translated  Attribute Title in the Manage Labels section.

Magento 2 attribute title

3. Go to Properties and set the translated names for the Attribute Option Values and Save Attribute.

Magento 2 attribute options values

This is what you will see on the storefront as a result.

Magento 2 attribute options values on the storefront

In case you want to manage product translations more conveniently, check out the article on how to translate product attributes for all store views from the product page.

 Product Attributes and Attribute Options Translation is just one of the series of articles about How to Configure Multi-Language Magento Website? which include information about the creation of a new store view, language packs installation, useful multi-language store extensions, product&category, CMS pages&blocks, email templates, and other translations in Magento 2 website. You should definitely get acquainted with them in order to know how to manage a multilanguage store.