Thanks for posting this question. I'm checking on this and will get back to you shortly.
It looks like you missed adding the screenshot. In the interim, kindly take a look at FeaturesMode: Relevance and scoring - Azure Cognitive Search | Microsoft Learn to know about scoring per field basis which may help to determine better boosting values.
Edited:
Kirti Chaturvedi resolved the issue after setting this option
options.GetType().GetProperty("ScoringStatistics").SetValue(options, ScoringStatistics.Global);