Simply passing it like http://localhost:8080/rest/api/2/issuetype?access_token=YLebKLCapdv0KOPhZhu65dAUsLBTfPGx as told by this post Getting a Jira Issue via OAuth Authentication using Postman is not working
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After researching I came to realize that Jira Rest Access Token is currently only available for Jira Cloud.
The server's API access token is still under Atlassian's gathering interest phase. You can vote on this ticket JRASERVER-67869
Consider using Basic Authentication on jira Server for the time being
The thread from Atlassian Community for Jira Server API Token