As you have completed a Bachelor's degree, you are already eligible to appear in most of the Government exams which are conducted to recruit people for Government Services. Some of these exams include State Public Service Commission exams, IBPS banking exams, etc., It is not necessary to do a computer course to get a job. Moreover doing the course will not guarantee you a job.
You can also purse higher studies and look for more opportunities. If you are looking for career in IT industry then you can take MCA or MSc Information technology or any other equivalent computer course. You should appear in campus interviews with proper preparations to get a good job.