Due to problem of internet connection or network strength, many JAMB exam centres where not able to conduct biometric data verification to all candidates that sat for their JAMB exam there. It means you were not authenticated and verified for the JAMB exam as the candidate you claimed to be. Though some invigilators promise to notify JAMB about the issues but how knows if many did.
In some situation, this might be cause by the candidate or JAMB officials. But if the JAMB official in charge of your centre did not file any report about it, I am not sure if your JAMB result will be released. It might sound harsh but it is the reality.
Note that JAMB uses programmed machine to mark and compile JAMB result and the machine will also check for Biometric Verification data in answer script and may reject results without Biometric Verification data.
Solution to the Problem;
Visit the nearest JAMB office and lay your complaint, also know that many people are facing the same problem that you are facing, JAMB will bring out a possible solution to that.