Hi @Dushyant Patel ,
> RESTORING BACKUP FILE FROM \h4\E$\Database_Backups\X01\X01_backup_2021_03_01_020001_4627658.bak
>Msg 3203, Level 16, State 1, Line 37
>Read on "\64\E$\Database_Backups\X01\X01_backup_2021_03_01_020001_4627658.bak" failed: 2(The system cannot find the file specified.)
Please make sure the .bak file location is correct. Or this is just a mistake when you post the issue. Make sure the share folder is existed.
Did your SQL server service account has full Control permissions to the shared folder? Did this is a restore job? If so, the SQL server agent service account also need to have read and write permission to this shared folder.
If it is still not work, please check your SQL server error log to find more related message around the error. And share us the information.
If the response is helpful, please click "Accept Answer" and upvote it, thank you.