"Jus". To say a flavoured juice (i.e. Apple juice) you would add the flavour to the end (i.e. Jus de pommes).
The French word for "juice" is "jus." However, your proper name Juice would be kept as is if you were addressed in French.
jus
Jus
"Jus."
jus de l'éléphant That is in french i take classes in french
sur le jus
orange juice
Olivie juice is "Jus d'olive" and olive oil is "Huile d'olive."
Jus de pomme (it means apple juice in French, btw)
In French, "orange juice" is translated as "jus d'orange." The noun "jus" (juice) is masculine, so the phrase is considered masculine in gender. However, the word "orange" itself is feminine, but it is used here as an adjective to describe the type of juice.
un jus d'ananas
jus de pêche