if you were to meet Meghan, The Duchess of Sussex, the appropriate way to greet and address her would depend on the specific situation and the cultural norms of the context in which you meet her.
Traditionally, when meeting a member of the British royal family, such as a Duchess, a formal greeting like "Your Royal Highness" or "Duchess Meghan" would be appropriate. As for bowing or curtsying, this is a traditional gesture of respect and deference to royalty in some cultures and may still be observed by some individuals. However, the rules of etiquette and protocol may vary, and some people may choose not to bow or curtsy in more informal settings.
It's essential to remember that Meghan, The Duchess of Sussex, has expressed her desire to be treated in a more down-to-earth manner and prefers to be addressed simply as "Meghan." Therefore, if you were to meet her, it would be considerate to follow her preference and address her in the manner she prefers. Respecting personal preferences and boundaries is always important when interacting with anyone, including members of the royal family.