What is the ruling on a fiancé going out with his fiancée to give her a ride and protect her from the widespread harassment?

The fundamental principle is that a Muslim woman should remain in her home, especially during times of tribulation, and should not go out except when necessary. If she does go out, she must take the necessary precautions, such as choosing an appropriate time or being accompanied by a mahram. The fiancé is a stranger to his fiancée, and it is not permissible for him to interact with her except within the bounds of Islamic law. If the girl needs her fiancé to accompany her in a special and necessary situation, he must lower his gaze, speak to her only when necessary, and walk ahead of her to avoid temptations, following the example of Musa (peace be upon him). It is preferable to expedite the marriage and avoid prolonging the engagement period.