Hello @Prajith Karumathil ,
Welcome to the MS Q&A forum!
There is an official documentation explaining the Resource Providers for Azure Services. As well REST API command - Providers List, Resource Explorer to review.
I checked those and confirmed they don't have the Date and Time of registration parameter.
Meanwhile, you still may find this information in the Activity Log as an ARM operation itself.
Support team may share, but again could be limited depending how long ago ARM operation was made.
I searched for the related feature requests and couldn't find if any was raised in Uservoice on feedback forum. So I would recommend you to create one and upvote it, so that ask will become more visible for the engineering group and based on demand could be implemented in the future.
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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Sincerely,
Olga O