IGNOU is a reputable and accredited government distance learning university. It has been approved by both the UGC and the AICTE. So there is no doubt about the validity of IGNOU degrees now or in the future.
The second point to consider is Distance Education. Yes, degrees from open universities are not accepted for all types of jobs or vacancies. Approximately 10-15 years ago, the majority of government jobs required regular courses. This trend is currently changing.
IGNOU degrees are accepted in both cases. However, there are still very few government or private companies, such as TCS, that do not consider candidates from distance education. Because they are in short supply, you will have no trouble finding a job with an IGNOU degree. It also depends on the degree to some extent. Regular engineering or B.Ed degrees are still considered superior to distance degrees. Distance or regular mode courses such as BSc, Bcom, or BA are nearly equivalent.
In a nutshell, an IGNOU degree qualifies for the majority of government jobs.