In order to activate your Revolut card, you need to verify your identity. We'd ask you to submit a government-issued photo ID, a selfie, and sometimes a proof of your residency. The whole process normally takes less than 5 minutes.
After your identity is verified, your virtual card can be used right away for online transactions. For your own safety, contactless and online payments of your physical card are only activated after you complete a chip-and-PIN transaction in-store. You can also manually enable them via the 'Security settings' within the 'Cards' section of the app.