Sure it does, coz sex is a classification or category. All humans (and sexually reproducing plants and animals) are in one or the other or category: the category that has evolved to have the potential capacity to produce mature eggs at some point in time, or the potential capacity to produce sperm at some point in time.

Lots of people will always be infertile for one reason or another, but they still belong in one or the other sex category. All people are infertile for the first decade or so of our lives prior to puberty, but even prior to puberty we are still male or female. Similarly, all female people who live a full lifespan will spend a good chunk of our lives post menopause and thus unable to produce mature eggs; but even after menopause, we still belong in the female sex category.

What's more, even during the phase of life when female people are usually at the peak of our fertility, female humans are not typically capable of reproducing all the time. But we are still female all the time.

Unlike fertile human males, who can produce sperm at any time and can do so repeatedly day after day, fertile human females normally produce only one mature egg per menstrual cycle and are only capable of getting pregnant a few days a month. Yet we are still female each and every day of the month. Just as we are still 100% female when for one reason or another - medication, health conditions, pregnancy - our capacity to ovulate whilst in our "childbearing years" has been suspended.

Most female humans whose reproductive system works properly and do not have impaired fertility are nonetheless able to produce mature eggs only for a portion of our lives - a period of about 40 years from menarche circa age 11 to menopause circa age 51. But most women who make it to menopause will live many decades past it - and going through menopause doesn't change our sex or cause us to drop out of the female category. A post-menopausal woman is just as much a member of the female sex as a pre-menopausal one is; they are just in different phases of the natural human female life cycle.

In fact, since the average life span of female humans in many well-off countries nowadays is 85+/-, and in some countries it's nearly 90, it's now becoming more and more the norm for female humans to spend a greater proportion of our lives unable to produce mature eggs than able to do so. But that doesn't change the fact that we're female from the moment of our conception to the second we die.