/usr/bin/pip3
pip is a Python package installer, recommended for installing Python packages which are not available in the Debian archive.
/usr/local/bin/pip3
pip is a Python package installer, recommended for installing Python packages which are not available in the Debian archive. pip3 is the command to use when installing packages for Python 3.
/Library/Frameworks/Python.framework/Versions/3.10/bin/pip3
The binary is a part of Python public framework.