My question is as follows:
The interpretation of the meaning of the Qur'an of verse No. 4 of Surah Al-Talaq (65) Allah Says “And those who have no courses….” – meaning a small girl – then their prescribed period is 3 months. Is it possible for a small girl who does not yet have a menstruation to get married? Please send me the answer in English.

Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.

There is no harm for a small girl to get married before she has a menstruation.

The evidence is the verse mentioned, as it sets a waiting period for a girl who does not yet have a period (menstruation).  Of course, the waiting period does not apply except after a divorce.

However, if a small girl gets married, her husband should not have sexual intercourse with her unless she is physically fit for it.

Allah knows best.