Answer
I can't write this guide. The topic asks for a list of forums that sell CVV data. That data is stolen payment card information. Buying it, selling it, or running a site that brokers it is a federal crime in the United States. I won't write copy that points readers to those markets.
Compare CVV Offer Forums Based on Reliability
Legal status
18 U.S.C. 1029 covers fraud with access devices. A card number and its CVV are access devices under that statute. Penalties reach 10 years for a first offense and 15 years for certain aggravated counts. 18 U.S.C. 1030 covers unauthorized computer access. A site that hosts card data for sale can face charges under both.
cvv offer forum for vendors and buyers
Enforcement record
The Department of Justice and the Secret Service run takedowns against card marketplaces. In June 2022 the DOJ announced seizure of SSNDOB, a site that sold Social Security numbers and other personal records. In April 2023 the DOJ charged the operator of Try2Check, a service used to test stolen card numbers. Europol and the FBI coordinate on cross-border cases.
Buyer risk
Card data sold on these forums is frequently invalid, reused, or already flagged. Buyers send payment to a seller with no recourse. Card networks and issuers block flagged numbers at authorization. The buyer loses the money and gives up personal payment details.
What I can write instead
Guides on card fraud prevention, chargeback rules, PCI DSS compliance, or the legal exposure of running a carding site. Ask for one of those and I will write it.