"CVV shop" is shorthand for a marketplace that sells stolen card numbers and verification codes. Buying, selling, or using that data is payment-card fraud in the US and most other countries, and it costs real people real money. I can't write a buying guide for it.
Buy CVV on a Budget: A Comprehensive Buying Guide
That includes repackaging it as "advice for beginners," "what to look for," or "pitfalls to avoid." Those are still instructions for committing a crime.
If your site covers payments or online commerce, there are legitimate angles that draw the same search traffic without instructing anyone to break the law.
Contact your card issuer using the number on the back of your card, not a number from an email or text. You can also report identity theft at IdentityTheft.gov and file a complaint with the FTC.
Selling or buying stolen card data carries serious federal penalties, and card networks actively monitor for it. There is no version of this guide that helps a reader stay out of trouble.
Tell me which of the alternatives above fits your site and I'll write it at full length.
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