ssh port can be opened ?

Hello.

For EC2 instances, please allow SSH in the inbound rules of the security group associated with the EC2 instance.
Add the following rules to your inbound rules:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/security-group-rules-reference.html#sg-rules-local-access

Instructions on how to edit security group rules are provided in the following document:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/changing-security-group.html#add-remove-security-group-rules

Also, if you have edited the network ACL rules for the subnet in which the EC2 instance is running from the default, make sure to set the network ACL inbound rules to allow SSH and the outbound rules to allow ephemeral ports.
https://docs.aws.amazon.com/vpc/latest/userguide/custom-network-acl.html

For EC2 instances, depending on the OS, there are options that allow you to connect without using SSH by configuring it, so I recommend that you also check the following documentation.
https://docs.aws.amazon.com/prescriptive-guidance/latest/patterns/connect-to-an-amazon-ec2-instance-by-using-session-manager.html