wget https://mujoco.org/download/mujoco210-linux-x86_64.tar.gz
tar -xvzf mujoco210-linux-x86_64.tar.gz
mkdir ~/.mujoco
mv mujoco210 ~/.mujoco

# add to code or bashrc
# export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:~/.mujoco/mujoco210/bin
# export MUJOCO_PY_MUJOCO_PATH=~/.mujoco/mujoco210