Status Of Earnings From A Degree Attained Via Unethical Means
If one gets a job based on fake degree or through deception, then later during that job If one has developed enough competency for the job then income earned from that Job would be Halal. However, one will be held accountable for the initial act of deception done to get the job or fake degree in the first place. One should try to repent to God for this mistake and should try to make good for that deception through whatever means available. Please also refer to the following response of Ghamidi Sahab from 1:06:30 to 1:08:03 https://youtu.be/pEfET6cqiIY?t=3990