Answer:
To find how close her campaign is from potential ideal results
Explanation:
Organisations use the optimisation score to know how the Google ads account they set up would likely perform. The scoring is between 0% to 100%, and when the account attains the 100% mark, it would likely perform optimally.
The scores are usually put together with a list of recommendations an organisation can pick from and in each of the recommendations, the organisation can see how their optimisation score would be affected should they decide to apply that recommendation.