i buy my dedicated server and now what

Hi , i buy my dedicated server and i want use my server to host my website .
so i buy dedicated server and i dont know how to setup and dont know what i should do.
so this some steps that i maked and im not sure if this right
1- i install Ubuntu Server 20.04 LTS "Focal Fossa"
2- i generate ssh RSA key with putty and i added the ssh to my dedicated server and i get my Server IP

now i want to Monitored services FTP
and i now here
https://docs.ovh.com/de/dedicated/monitoring-ip-ovh/images/monitoring3.png

i set my ip but i dont know what to fill in the other boxes like
server repsone:
interval in seconds:
URL:

help me to finish this