What version of OpenCore am I running?

Source: How to check the current OpenCore version?

Open up the terminal, and slap this bad boy in there:

nvram 4D1FDA02-38C7-4A6A-9CC6-4BCCA8B30102:opencore-version

As of OpenCore version 0.6.4, you should see some output, followed by

opencore-version	REL-064-2020-12-07

Release 064 and the date of release are listed. (If you feel like your upgrade went well, but this isn’t reflecting the correct version, you might need to flush that vram. Upon that not working, following the Dortania Guide for your specific build is advisable).