MACBOOK SOFTWARE
How to upgrade from macOS Monterey to macOS Ventura on Macbook PRO [RETINA,15-INCH,MID2015]
MacBook Pro 15″, 12.3
Sorry, you're out of luck my friend...
The following Mac computers are supported by macOS Ventura:
MacBook (2017 and newer)
MacBook Air (2018 and newer)
MacBook Pro (2017 and newer)
Mac mini (2018 and newer)
Mac Studio (2022)
iMac (2017 and newer)
iMac Pro (2017)
Mac Pro (2019 and newer)
macOS Ventura system requirements: Can your Mac run macOS 13? (idownloadblog.com)