To apply for a Discover credit card, you can follow these steps based on the provided information:

1. Visit the secure portal: The application process is primarily handled online through Discover’s official secure portal.
2. Provide business and personal details: You will need to submit specific information for qualification, which includes your business details and personal credit information.
3. Meet eligibility requirements: Approval is based on creditworthiness. To improve your chances of qualification, it is recommended to maintain a strong credit score and a low debt-to-income ratio.
4. Consultation for merchant services: If you are looking to integrate Discover card acceptance into your business operations, you can qualify through a consultation with merchant service providers like The POS Brokers. They verify your transaction volume and ensure you have US-based operations to set up your merchant account with no setup fees.

Please note that while you can apply online, approval is not guaranteed and depends on individual credit evaluations.