its quite simple , everything will be automatically done in following command .
URL=https://www.aapanel.com/script/install_6.0_en.sh && if [ -f /usr/bin/curl ];then curl -ksSO "$URL" ;else wget --no-check-certificate -O install_6.0_en.sh "$URL";fi;bash install_6.0_en.sh aapanel
copy and paste command and you shaould get link for accessing panel where you can set password .