I am new to Splunk and I have a requirement as below to show in Splunk dashboard,
My questions here are,
Have you gone through the Splunk tutorials? Since you're new, this will give a great learning opportunities and you would be able to find answers to these questions yourself.
https://docs.splunk.com/Documentation/Splunk/7.2.6/SearchTutorial/Basicchart
Other links can be found in this answers post.
https://answers.splunk.com/answers/684944/can-you-suggest-some-splunk-tutorials-for-beginner.html