You will need Apple's Xcode (at least version 7, preferably 8.x) and the Xcode Command Line Tools:
https://itunes.apple.com/us/app/xcode/id497799835?mt=12
And Homebrew:
Use the brewfile to install the necessary packages:
brew bundleor
brew tap discoteq/discoteq; brew install flock autoconf autogen automake gcc@8 binutils protobuf coreutils wgetGet all that installed, then run:
git clone https://github.com/VerusCoin/VerusCoin.git
cd VerusCoin
./zcutil/build-mac.sh
./zcutil/fetch-params.shHappy Building