Battery health started dropping 1%per day after 14.6 update
Battery health started dropping 1% per day after 14.6 update... my iPhone se is just 50 days .. since I have bought
iPhone SE, iOS 14
You should arrange a repair
https://support.apple.com/iphone/repair/service
Anything other than Screen or Battery may be a replacement phone and the price is in the article, depending on your warranty or AppleCare+ status.
You can see additional service information within the following article:
Get your iPhone, iPad, or iPod touch ready for service - Apple Support
Battery Repair