Follow the steps below to set up ROS2 :
locale # check for UTF-8
sudo apt update && sudo apt install locales
locale-gen en_US en_US.UTF-8
update-locale LC_ALL=en_US.UTF-8 LANG=en_US.UTF-8
export LANG=en_US.UTF-8
locale # verify settings
sudo apt -y install software-properties-common
sudo add-apt-repository -y universe
sudo apt -y update && sudo apt -y install curl -y
sudo curl -sSL https://raw.githubusercontent.com/ros/rosdistro/master/ros.key -o /usr/share/keyrings/ros-archive-keyring.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/ros-archive-keyring.gpg] http://packages.ros.org/ros2/ubuntu $(. /etc/os-release && echo $UBUNTU_CODENAME) main" | sudo tee /etc/apt/sources.list.d/ros2.list > /dev/null
sudo apt update && apt install -y \
python3-flake8-docstrings \
python3-pip \
python3-pytest-cov \
ros-dev-tools
sudo apt install -y \
python3-flake8-blind-except \
python3-flake8-builtins \
python3-flake8-class-newline \
python3-flake8-comprehensions \
python3-flake8-deprecated \
python3-flake8-import-order \
python3-flake8-quotes \
python3-pytest-repeat \
python3-pytest-rerunfailures
sudo apt -y update
sudo apt -y upgrade
sudo apt install -y ros-humble-desktop
sudo apt install -y ros-humble-ros-base
Reference
https://docs.ros.org/en/humble/Installation/Ubuntu-Install-Debs.html