Hi @Kannan J ,
Welcome to Q&A Forum!
According to my research, there is no GUID (Document ID) for Folders in SharePoint Online, only ID. GUID acts on the file level. For more information, please see "Enable and configure unique Document IDs" article.
Also, there is no OOTB way to open the folder by GUID or ID.

Here I provide a workaround for you reference:
1.Go to the Document Library as a site admin
2.Create a Hyperlink column named [FolderPath]

3.Link: Fill in the relative path of the folder
Display text: Enter the ID value of the folder


Thanks,
Echo Du
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