How can I collect credit card data but not charge the card?

Unfortunately collecting Credit Card data is not allowed and violates Jotform's Terms which will result in Account Suspension/Termination.

You can only use our Integrated Payment Processing App/Widgets in collecting payments using Credit Card and no data will also be included when you receive a Notification Email.

Please check the guides below about Order Forms.

Order form basic - https://www.jotform.com/help/47-Order-Form-Basics

Types of Order form - https://www.jotform.com/help/49-Order-Form-Types

Creating your first Order Form - https://www.jotform.com/help/165-Setting-Up-Your-First-Order-Form