When saying APT, debian-based distros is assumed.
APT: dpkg-query -L <package_name>
dpkg-query -L <package_name>
Pacman: pacman -Ql <package_name>
pacman -Ql <package_name>
Don't forget to update the database with pacman -Fy
pacman -Fy
pacman -Fl <package_name>