I have installed LanguageTool via HomeBrew:
brew install languagetool
which automatically installs OpenJDK as a dependency
brew install java
which places the Java binaries in /usr/local/opt/openjdk/bin or /usr/local/opt/openjdk/libexec/openjdk.jdk/Contents/Home/bin/
openjdk 13.0.2 2020-01-14 OpenJDK Runtime Environment (build 13.0.2+8) OpenJDK 64-Bit Server VM (build 13.0.2+8, mixed mode, sharing)
Also for some reason, I had to install the OpenJDK Cask
brew cask install java
now when running java --version it returns
openjdk 14 2020-03-17 OpenJDK Runtime Environment (build 14+36-1461) OpenJDK 64-Bit Server VM (build 14+36-1461, mixed mode, sharing)
which I think is the Cask version. And when running which java it returns the "symlink"
/usr/bin/java
which using the readlink command (from here) returns an origin of
/System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java
Now following the other post on this forum, I tried to set all of these paths in TexStudio
with no avail. I tried all three different paths mentioned above, none working. I would appreciate it if you could help me know how to set the values Java, LT Path, and LT Arguments in the TexStudio > Preferences > Language Checking. Thanks for your support in advance.

/usr/local/bin/languagetool-server, default, default – homocomputeris Feb 25 '21 at 08:47