Hello sir, I have appeared in 12 exams (stream- science) year 2019 by NIOS so I want to know that is there any problems in future???
No, don't worry about that.You will be having no problem what so ever.Lots of students give exam through nios and that doesn't mean that they face issues in future in terms of job and career.I have never heard of any thing like that so you should not focus on all those things and focus on your own study and developing your skills.
Good Luck