If you’re talking about using a credit card for real estate, you can initiate cash advances to pull money out of your credit card, then use the money to purchase a property. After that, you can pay off the credit cards (depending on the interest rate).
However, this is not recommended. Plus, you’ll be expected to pay it back before any introductory APR period is over (unless you want to pay 25%+ interest). Imagine having to pay off an entire home after a year (typical introductory APR periods)!