Hi @Murugesan Rengan
Welcome to Microsoft Q&A, Thanks for asking question here...!
To recover the deleted automation accounts, try with below steps:
1.Sign-in into azure portal.
2.On search bar type automation accounts, displayed all active accounts.
3.On Automation account page left side "Recovery Deleted accounts" option will appear Click on that.
4.Click on subscription, choose your subscription from dropdown list.
5.list of all deleted accounts within that subscription will be displayed.
6.Click the check box that you want recover.
7.After Selection of the account at bottom of page, recover button is displayed click on that.
8.Go the automation account page and refresh it, restored account displayed in the active list.
Note: You can only restore an automation account within 30 days of deletion.
If you required anything, please let us know. please let us know.