Setting up reCAPTCHA involves a few steps, and it's typically used to protect web forms from spam and abuse. Google's reCAPTCHA service offers the traditional "I'm not a robot" checkbox. reCAPTCHA v2 is Free up to 1 million Assessments per month.

Here's a general guide on how to set it up:

1. Sign Up for reCAPTCHA:

• Go to the reCAPTCHA website (https://www.google.com/recaptcha) and click on the "Admin Console" button.
• Sign in with your Google account or create one if you don't have it.

2. Register Your Website:

Click on the "+ button" to register a new site.

• Fill out the form:
• Label: Choose a name for your website (e.g., "My Shop").
• reCAPTCHA Type: Nettailer currently only supports "reCAPTCHA v2" 
• Domains: Add the domain(s) where you'll be using reCAPTCHA (e.g., "www.example.com").
• Accept the reCAPTCHA Terms of Service and click "Submit."

3. Get API Keys:

• After registering your site, you'll see a page with your "Site Key" and "Secret Key." You'll need these keys to integrate reCAPTCHA into your website.

4. Integrate reCAPTCHA into Your Website:

For reCAPTCHA v2 Checkbox:

• Add the following info into the store @ Settings > Settings > Miscellaneous > Google reCAPTCHA.
  • Check the " Enable reCAPTCHA V2" to enable.
  • Add “Set reCAPTCHA secret key”.
  • Add “Set reCAPTCHA site key”.

5. Monitor reCAPTCHA Usage:

• Periodically check your reCAPTCHA usage in the reCAPTCHA Admin Console to ensure it's working correctly and to monitor any suspicious activity.

That's a general overview of setting up reCAPTCHA. Be sure to consult the reCAPTCHA documentation for the most up-to-date and detailed instructions for your specific use case.