Hello @Vardhan Reddy - Thanks for reaching out! For working with Azure DevOps services in Logic Apps, you'll want to take a look at the Azure DevOps connector. While the connector doesn't offer an action specifically for creating new repositories in Azure DevOps, it does have an action Send an HTTP request to Azure DevOps which you can use to invoke the Repositories - Create REST endpoint that'll create new repos in Azure DevOps.
If you encounter any problems when attempting to use the connector the way I recommend above, feel free to let me know in the comments and I'd be happy to help.