Just keep doing well in class, do 2-3 activities with tenure, and come back in a year. A summer job is a good thing too.
You’ll be fine.
PS - saw your other thread. ECs don’t need to be related to your major. If you enjoy writing, write. Perhaps you want to be a financial writer.
If you enjoy walking dogs at the shelter, do that.
If you have a job, do that.
If you are in the band, do that.
There’s zero need to tie to your major. There is a need for you to do things of interest to you. Not to game for admission purposes. That would stink - you do things you hate because it looks impressive and get rejected.
Take advantage of your HS years for you.
As for your rank - it is what it is. It’s fine - top 20%. But if you were top 50% or 75%, you are where you are.
There will be plenty of colleges for you to study finance at. In most cases, the where for the major will matter little.
Relax and enjoy school. You don’t need the stress.