Of course, having your education assessed does not guarantee you will get a job, as the employer will need to decide whether or not you are suitable for the specific requirements of the job. However it does make it easier to compete with local applicants. You can get more information on the assessment and find the relevant application form on the Cirius website.
Some jobs, such as those regulated by law, require applicants to obtain authorisation rather than an assessment. Professions in this category include any work with hazardous materials, electricians, various medical professions and more. You should refer to the Cirius website for the full list of professions in Denmark that require authorisation.