All needed is python3 on any Linux distribution and Sherlock from github
Installation
# clone the repo
$ git clone https://github.com/sherlock-project/sherlock.git
# change the working directory to sherlock
$ cd sherlock
# install the requirements
$ python3 -m pip install -r requirements.txt

Missing pip module
# install pip module
$ sudo apt-get install python3-pip

# Repeat the step to install the requirements
$ python3 -m pip install -r requirements.txt

# To search for only one user
$ python3 sherlock ‘username’
