The word "how" in French is generally translated as "comment" when asking about manner or way of doing something. For example:

• How are you? = Comment ça va ?
• How do you say this in French? = Comment dit-on ceci en français ?

There are other expressions depending on context, especially when "how" implies extent or degree, such as:

• À quel point (to what extent)
• Combien (how much/how many)

But for the simple question "how," the most common and direct translation is comment.