“Oh, yes." She looked at me absently. "Listen, Nick; let me tell you what I said when she was born. Would you like to hear?""Very much.""It'll show you how I've gotten to feel about—things. Well, she was less than an hour old and Tom was God knows where. I woke up out of the ether with an utterly abandoned feeling and asked the nurse right away if it was a boy or a girl. She told me it was a girl, and so I turned my head away and wept. 'All right,' I said, 'I'm glad it's a girl. And I hope she'll be a fool—that's the best thing a girl can be in this world, a beautiful little fool.”What does this quote show how women are viewed in the novel? How does this help us understand the characters of Tom and Daisy Buchanan? Do you agree or disagree with Daisy’s assessment?

This passage shows, at least in Daisy's opinion, that women in this society are judged and valued according to how beautiful they are, not how intelligent. In fact, Daisy believes intelligence is detrimental to a woman's happiness. It is better, she says, to be a fool.
Daisy tells this story to Nick early in the novel, when he comes to her grand home for dinner. At the dinner, he learns that Tom is having an affair and that this is distressing to Daisy.
Daisy is trying to express her unhappiness with Tom to Nick when she describes the birth of her child. Tom is "God knows where"—he is missing at a very important point in Daisy's life. We get the sense that the "utterly abandoned feeling" Daisy experiences when she wakes up from the ether after the birth is not uncommon to her in relation to Tom. She would like Tom to be there for her at the birth of their child just as she would like him to be eating dinner at that moment with her and the guests, not talking on the phone in the other room to his lover.
This passage also shows that Tom is capable of being selfish and insensitive to Daisy's needs.
I don't agree with Daisy's assessment of a female being best off being beautiful and a fool: Daisy is speaking out of her own disillusionment with her marriage and, as Nick later notes, he has the uncomfortable feeling she is overdramatizing her situation for effect. In other words, Daisy herself may not believe what she is saying about her daughter, but speaking to express her unhappiness over Tom's affair.