Yes, they can be used in large companies or state-owned/government-owned entities, and there is no limit to the number of projects you can work on, unlimited projects.
Can the assets here be used for work from (e.g., fiverr, sribu, etc.)?
Yes, they can be used for work from (e.g., fiverr, sribu, etc.), and there is no limit to the number of projects/contests you can work on, unlimited projects.