The value of Cousera certificates depends on many factors.
Accreditation is not part of the discussion, though. In the U.S., accreditation covers either a higher education institution (a college or a university) or a specific program with a college or university. It is not designed or intended to warranty the value of non-academic education.
As for higher education, it depends on the university/college. Some will provide academic credit for someone who has completed a Coursera course or program. Most will not.
As for employment, it also depends. Many employers are looking for a college degree. Coursera is not the equivalent to that and does not intend to be. Whether employers are right or wrong, is beside the point. It is part of the culture.
In fact, many people who take Coursera courses have a college degree. They are looking for education on specific skills that can help them advance or switch careers.
An employer will want to know not that you took a course, but that you can apply what you learned from that course. Coursera is a great way to learn new things, but on its own, most employers won’t care. One option are fields with certification exams, like in computer networking. These certifications provide a way to demonstrate what you know. Another option is to volunteer or work on a side business where you can develop a portfolio about how you have applied what you have learned. Employers will always give the edge to experience over education.
The value of a Coursera certificate depends on your background, the certificate, and what job you are going for. Someone with experience working on a helpdesk who has taken some Coursera classes in IT support will have an advantage to people with no experience and the Coursera classes or with experience but no Coursera. Someone who learns digital marketing from Coursera and then applies that in starting their own business will be more attractive than someone who has just taking the courses.
Your individual results will vary. Coursera certifications can be a tool, but only in the right context. They are not a magic potion that makes you employable.