Google Just Launched an Official Pay Plugin for Magento 2
https://developers.googleblog.comGoogle has just launched an official Google Pay plugin for Magento 2. When you integrate with Google Pay, your customers can complete their purchases quickly using the payment methods they’ve securely saved to their Google Accounts.
The Google Pay plugin can be installed from the Magento Marketplace using this link or by searching the Magento Marketplace for “Google Pay”.
Refer to the Magento Marketplace User Guide for more installation instructions.