Can i upgrade from Sierra to hiSierra?

Uh old on, I was going by what you had written "mac pro" rather than the model you stated in your profile "MacBook Pro". There's a world of difference and it is critical you post exact information here. ;-)

Yes, the MacBook Pro mid-2010 17" can be upgraded to High Sierra 10.13.6 but no higher than that. See instructions in https://support.apple.com/en-us/HT211683

Yes. If you want to go any higher take note of this article: Install macOS 10.14 Mojave on Mac Pro (Mid 2010) and Mac Pro (Mid 2012) - https://support.apple.com/HT208898