The reason a woman being a whore is a dishonour is because the market value of pussy is astronomically high compared to the market value of the penis. I.E if a girl asked 20 guys to have sex with her, they would. If a guy asked 20 girls to have sex with him, high chances he gets 0 willing participants. So a man having a high number of sexual partners shows he is charming in some way. While a woman with a high number of sexual partners just shows she gets out a lot