Final answer:
The specific sector generating the highest share of revenues in 2020 is not listed in the provided reference information. However, retail is highlighted as a strong performing sector with $524 billion in revenue.
Step-by-step explanation:
The business sector that generated the highest share of revenues in 2020 is not explicitly provided in the reference information given. However, according to provided data, major economic sectors such as manufacturing, industry, biotechnology, telecommunications, aviation, shipbuilding, and retail have shown strong growth rates. Moreover, the retail sector showed a significant amount in revenues with $524 billion despite the pandemic's impact.
When we consider the categories mentioned within the initial question none of them explicitly match the sectors provided in the revenue data. Therefore, it is challenging to determine which of the listed options (1) Selective retailing, (2) Fashion leather goods, (3) Wines spirits, (4) Perfumes cosmetics) generated the highest share of revenues without additional context or data specific to those categories.