"Kuh-maw tah-pehl tyoo" is a way to pronounce the French phrase "Comment t'appelles-tu?"
Specifically, the adverb "comment" means "how." The reflexive "te"* means "yourself." The verb "appelles" means "(informal singular you) are called, call, do call." The subject pronoun "tu" means "(informal singular) you."
*The vowel "e" drops before a verb that begins with a vowel. The temporary nature of that drop is indicated by an apostrophe immediately after the pronoun and immediately before the first letter of the verb.
"How are you?" is an English equivalent of the French phrase Comment vas-tu? The pronunciation of the phrase in the present indicative of the second person informal singular -- which literally translates as "How are you going?" or "How do you go?" -- will be "kuh-maw va-tyoo" in French.
"His name is what?" is an English equivalent of the French phrase Il s'appelle comment? The question translates literally as "He calls himself what?" or "He names himself what?" in English. The pronunciation will be "eel sa-pel kuh-maw" in French.
"What's her name?" is an English equivalent of the French phrase Elle s'appelle comment? The question represents a colloquial, conversational, friendly, informal way of asking Comment s'appelle-t-elle? and translates literally as "She calls herself how?" or "She names herself how?" in English. The pronunciation will be "el sa-pel kuh-maw" in French.
"How's school going?" is an English equivalent of the French phrase Comment ça va l'école? The question translates literally as "How does that go, the school?" in English. The pronunciation will be "kuh-maw sa va ley-kol" in French.
"How" in French is "comment"
"How you..." and "What, you!" are English equivalents of the French phrase Comment tu...? or Comment, tu! Context makes clear which option suits. The pronunciation will be "kuh-maw tyoo" in French.
"How so?" is an English equivalent of the French phrase Comment ça? The question translates literally as "How that?" in English. The pronunciation will be "kuh-maw sa" in French.
"How do you say...?" is an English equivalent of the incomplete French phrase Comment dit-on...? The question translates literally as "How does one say...?" in English. The pronunciation will be "kuh-maw dee-to" in French.
"How do you look?" and "What are you like?" are English equivalents of the French phrase Tu es comment? The question translates literally as "You are how?" in English. The pronunciation will be "tyoo ey ku-maw" in French.
"How do think you look?" is an English equivalent of the French phrase Comment trouves-tu? The question literally translates as "How do you find yourself?" in English. The pronunciation will be "kuh-maw troov-tyoo" in French.
"How you... ?" is a literal English equivalent of the incomplete French phrase Comment vous... ? The pronunciation of the interrogative in the second person informal singular "you" / formal and informal plural "you all" will be "kuh-maw voo" in French.
"How is that written?" is a literal English equivalent of the French phrase Comment ça s'écrit? The question represents a colloquial, conversational, friendly, informal way of asking Comment cela s'écrit-il? The pronunciation will be "kuh-maw sa sey-kree" in French.
"How are you?" is an English equivalent of the French phrase Comment vas-tu? The pronunciation of the phrase in the present indicative of the second person informal singular -- which literally translates as "How are you going?" or "How do you go?" -- will be "kuh-maw va-tyoo" in French.
"What name...?" or "What's (the) name...?" are English equivalents of the incomplete French phrase Comment s'appelle...? The question translates literally as "How is (he, it, one, she) called...?" or "How is (he, it, one, she) named...?" in English. The pronunciation will be "kuh-maw sa-pel" in French.
"His name is what?" is an English equivalent of the French phrase Il s'appelle comment? The question translates literally as "He calls himself what?" or "He names himself what?" in English. The pronunciation will be "eel sa-pel kuh-maw" in French.
"How are you?" in the sense of "What are you like?" is a literal English equivalent of the French phrase Comment es-tu? The question also translates less literally as "How do you look?" or "What do you look like?" The pronunciation will be "kuh-maw ey-tyoo" in French.
"How is her mood?" and "How is his mood?" are English equivalents of the French phrase Comment est son humeur?Context makes clear which possessive adjective suits. The pronunciation will be "kuh-maw ey so-nyoo-muhr" in French.