Nora's predicament can be seen as representative of a situation that many women have had to experience and, perhaps, still endure.
There is a great deal in Nora's situation that can apply to many women. For example, Torvald patronizes Nora. He refers to her in terms such as “singing lark,” “little squirrel,” and “little spendthrift.” These expressions do not validate her voice. For example, Torvald never probes into why she might be a "spendthrift." His characterizations of Nora are reductive. They take away her intricacy as a human being by placing her in a context familiar to him. The patronizing way that Torvald perceives Nora is representative of what many women have experienced.
The way Torvald refers to Nora places her in a situation he controls. This denial of voice is something that women have had to experience in marriage. Torvald controls Nora's identity as a wife. In this way, marriage is shown to be a repressive institution. Many women can relate to this condition. The rise of feminism and the emergence of gender-based identity politics reflected a desire to change the branding of women at male discretion. The presence of feminism today reflects how many women around the world continue to experience this reality.
Nora's breaking away from Torvald is also an experience representative of women. Many women have broken free from a situation where they were controlled or where they felt their voice was not validated. When Torvald rejects Nora, saying that she can stay for appearance, she finally gets him. She leaves him because she knows she deserves better. Torvald is shocked that he is no longer able to control her. This experience of breaking free, asserting one's own voice, and finding a new identity are all representative of what women have done and what women continue to do today.
I think that there is always a danger in saying that a particular character represents an entire group of people. Nora is representative of what many women have experienced. While it is important to underscore that she does not represent every single woman, there are aspects of her experience to which many women can relate.