We can measure the quality of a requirement using SMART rule. As per this rule, a good quality requirement should be:
Specific: The requirement should be specific and could be documented properly
Measurable: Different parameters can measure the success criteria of the requirement
Attainable: The requirement should be feasible within the scope of the given resources
Relevant: The requirement must be in line with the project’s business case
Timely: The requirement should be communicated early in the project lifecycle