Hi! My name is Lauren Goodkind and I’m a respected chess coach and chess YouTuber who helps beginners out :
https://www.youtube.com/channel/UCP5SPSG_sWSYPjqJYMNwL_Q
It depends on the person. If you study chess everyday, then you will improve faster than someone who doesn't study chess at all.
People who have a natural ability for chess can get to 2000 in about two years.
Don't compare yourself with others and just focus on yourself.
Some people can gain several hundred points in six months. If I was you, then I would study tactics and play slow chess games.
Remember to have fun!
I hope that this helps.
I’m in 8th grade, so next year I’ll be a freshman, the high school I’m going to has a chess team that I’m interested in joining, however I don’t think a 760 elo is going to get me in. How fast can one improve in 6 months?