Dear Sansim,
No one is perfect in this world. You know you are taking a risk for a good cause to support your family. Family comes first, and it's everyone's right to work for a living. As far as I know, for a private job, you don't have to worry. Make sure you are not applying to any financial company. If you have cleared the interview, that means you are eligible for that job. Don't jeopardize your career in the name of a certificate. I have seen people who are worth less than a housekeeper holding an Engineering degree and big positions.
When you are taking a risk, ensure that you dedicate your best to the company and be gentle with your coworkers. Management should think twice before firing you. There are many study centers that charge very little and can help you clear exams. Make sure to find one.
Certificates are the only means for a company to filter candidates for interviews. Frankly speaking, I am using only 1%-2% of what I have learned in my 25 years of education. The average life expectancy nowadays is around 50-60 years. So, I have spent 25 years learning how to live my next 25 years. Life is the real school. Keep the ball rolling, and only then will you grow. Risk is everywhere, even while crossing the road. We should not block our minds with these so-called certificates sold by educational institutes. Nowadays, education is a business. I see people who have only completed the 3rd standard running engineering colleges. It pains every parent to pay 60,000 for pre-nursery, all to see good numbers on a mark sheet.
I wish you all the best for your future, and please ensure that your child receives a good education. Whatever I have told you is applicable to you as we can't change the past.
All the people who suggested not to submit a fake certificate, are they true to themselves? How many of us follow traffic lights at 2:00 am? None. At least, how many people got their driving license without paying a bribe? Sin is a sin, and we should be ready to reap its fruits. I give more importance to human values than these certificates.