Yes, you can work abroad after BSc. This depends upon your subject and country. Most countries permit foreign graduates to settle there- engineering, IT, health care and science fields especially. Still, there may be specific requirements that you would need to meet to work abroad, for instance, securing a job sponsorship or obtaining a work visa or satisfying the local qualifications. For example, in the European Union, a graduate's access to the job market is relatively easy with a degree from an accredited institution. Other countries, such as the US, require either some form of certification/ licensure in certain professions or require the individual to take a test or obtain additional education.
In addition, a BSc degree allows one to work abroad and therefore provides an opportunity for career growth and international exposure. Some employers value global experience, which may improve your job prospects. Research the specific regulations and work opportunities in the country you are interested in. Networking, internships, and gaining work experience during your studies can also boost your chances of securing a job abroad after graduation.