how to upgrade safari on macpro 2012
I been trying to upgrade safari on my Mac 2012 but I can't.Can anyone help
Safari is upgraded when you upgrade mcOs on your MacBook Pro.
A mid 2012 or late 2012 MacBook Pro can be upgraded to Catalina 10.15.7 but no later. See: How to download and install macOS - Apple Support
Safari 15.6.1 is the latest version of Safari that you can run with Catalina 10.15.7 and therefore is the latest that you can run on a mid 2012 or late 2012 MacBook Pro.
You may want to use a 3rd party internet browser that supports running their current version on your Mac. One option is Chrome: https://www.google.com/chrome/