Check your zabbix server log and check your zabbix agent logs. Asuming that your agent is running you have a connection problem, or your hostname parameter in the zabbix agent config is not exactly as you entered in the zabbix GUI.
hostname is case sensitive.
Also check your windows event viewer. There could very well be a firewall that is blocking your ...
I shouldn't have answered this but if someone comes up with this question he or she may know that if they want to install Zabbix on their machine than they should see the supported platforms first for zabbix. Then they should try. If they try to install zabbix on linux machine then at least they should avoid Amazon Linux or Amazon Linux 2 AMI. THanks