login to AWS Console And cerate EC2 intance in that EC2 process download the key convert the key pem file to ppk file using putty gen and go to putty and use @ip then browse the key and login ofter folloe the below steps to connct to jenkins

sudo apt-get update sudo apt install openjdk-8-jdk -y wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -

or

wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add - echo deb https://pkg.jenkins.io/debian binary/ | sudo tee /etc/apt/sources.list.d/jenkins.list sudo apt-get update sudo apt-get -y install jenkins sudo service jenkins status

sudo systemctl start jenkins sudo systemctl status jenkins sudo ufw allow 8080

then enter password