Unzip with my macOS Mojave 10.14.6
I have tried to unzip a file and the computer cannot find the programme to unzip
You have many options here:
— The Terminal.app as suggested above, (includes the trailing space) copy and paste:
unzip -q
and simply drag & drop your <file.zip> to the terminal window.
I find this easiest if my zip is sitting on the Desktop, change the Terminal directory to Desktop, copy and paste:
cd Desktop
then continue as above.
— ArchiveUtility.app you can do a spotlight search (command spacebar) and click open
— StuffitExpander.app shareware.