qmasterd file on mac won't delete

There's one file in my trash that won't delete and I can't find a solution. Whenever I empty trash, it just says “qmasterd” can’t be modified or deleted because it’s required by macOS.

I found a solution, but I must be typing in the directory wrong, because terminal says it can't find the file/directory. The solution I found said to restart in Recovery mode, launch Terminal from the Tools menu, move to the directory with the offending file, then type in "rm filename"

I'm no terminal genius, so I'm sure I'm doing this wrong. What would the full command and path be if the folder/file in my trash was "Incompatible Software/qmasterd?"