mac os high sierra

A 2017 MacBook Pro can be upgraded to the current macOS Ventura. See instructions in: How to upgrade to macOS Ventura - Apple Support

To download an earlier macOS, see: How to download macOS - Apple Support

Be aware that if you upgrade to Catalina 10.15 or later you will also need to update any non-Apple 32-bit apps. See: https://www.macworld.com/article/232735/how-to-check-if-mac-software-is-32-or-64-bit.html

The option that you get when installing from Recovery are different. See the following from How to reinstall macOS - Apple Support

When you install macOS from Recovery, you get the current version of the most recently installed macOS, with some exceptions:

• If you just used Disk Utility to erase your startup disk, you might be offered an earlier compatible version of macOS.
• On an Intel-based Mac, if you use Option-Command-R during startup, you might be offered the latest macOS that is compatible with your Mac.
• On an Intel-based Mac, if you use Shift-Option-Command-R during startup, you might be offered the macOS that came with your Mac, or the closest version still available. 
• If the Mac logic board was just replaced during service, you might be offered the latest macOS that is compatible with your Mac.

You may need to install High Sierra from that screen first and then upgrade to a higher version later (if you want to).

If you can't install from that screen, see the following from the same support article:

If you need help

• Learn what to do if your Mac doesn't start up all the way.
• On an Intel-based Mac, if you can't install macOS successfully after pressing Command-R during startup, press Option-Command-R at startup instead. Then try installing macOS again.
• If you still need help, contact Apple Support.