Literally it means 'it is pleasing to me'. People use it to say 'I like it'.
¿Porqué le gusta español? = "why do you like Spanish" or "Why does he/she like Spanish" (without the accent mark, it could mean, because you like spanish or because he/she likes spanish.)
le gusta cuando hablo en espanol = He/she likes it when I speak Spanish
¿A ella le gusta a ti?
to like
"El amor le gusta" does not make sense in Spanish. However, "el amor me gusta" means "I like love" in English.
The phrase "Cuanto la gusta" makes no sense in Spanish. If it was "Cuanto le gusta", it would mean, "How much he/she/you likes it".
Le gusta vivir aqui ?
It means, "what do you like to do to your Spanish teacher?"
¿Le gusta el cine? Do you like the movies? ¿Le gusta leer? Do you like reading? ¿Cuál es su cantante preferido? What is your favorite singer? ¿Le gusta bailar? Do you like to dance?
gusta= like "gustar" is the verb meaning, "to like"
Le gusta
It means "Gloria likes the family".