Magento 2 module that adds the Google Recaptcha on Seller Create Account, Contact Form, Customer create and Forgot Password pages.
You need to register your site with Google Recaptcha.
https://www.google.com/recaptcha/
Under Stores -> Configuration -> Services -> Recaptcha Configuration -> Extension Settings
Enabled -> Yes
Site Key -> from Recaptcha website
Secret Key -> from Recaptcha website
composer require landofcoder/module-marketplace-recaptcha
Enable Module
php bin/magento module:enable Lof_MarketPlaceRecaptcha
php bin/magento setup:upgrade --keep-generated
php bin/magento setup:di:compile
You may need to Flush Magento Cache after installation.