At which age a human female reaches menopause ?

50 years.

A human female typically reaches menopause around the age of "50 years."

Menopause is a natural biological process that marks the end of a woman's reproductive years. It is characterized by the cessation of menstruation and a decline in reproductive hormone levels, particularly estrogen. While the age of menopause can vary, the average age is around 50, with a normal range typically between 45 and 55 years.