If you do have a license of Mendix and a cloud environment in the Mendix cloud;
Steps to be taken simplified:
More details:
https://docs.mendix.com/developerportal/deploy/
https://docs.mendix.com/developerportal/deploy/mendix-cloud-deploy
https://academy.mendix.com/link/paths/64/Deploying-an-App-to-a-Licensed-Node