This is not a real question asking for information. The demon was terrified that Jesus would judge him. Some languages will have to express this as a statement such as: “Please do not judge me, Jesus, Son of the Most High God!” (See: [[rc://en/ta/man/translate/figs-rquestion]])
This could mean ***the Supreme God*** or ***the Most Sovereign God*** or ***the Most Powerful God***. The meaning of **high** here refers to God’s greatness. It does not refer to altitude or being tall.
A legion was a group of several thousand soldiers in the Roman army. The name **Legion** is a metaphor that speaks of the demons as if they were a large group of soldiers. (See: [[rc://en/ta/man/translate/figs-metaphor]])
This was the name of the group of demons, but it also indicates that the evil spirits were very numerous. Use the name if the note that follows will make the meaning clear in your language. If not, you may need to translate the word as something like ***Army*** or ***Crowd*** or ***Thousands***.