If you're looking for a work contract, you'll need to apply for a job and go through the hiring process with an employer. They will then provide you with a work contract if you are successfully hired.
As for an entry visa, you need to contact the embassy or consulate of the country you wish to visit or work in. They will provide you with the necessary information and application process for obtaining the appropriate visa.
If you have any specific questions or need assistance with any other topic, feel free to ask!