Hi @ASR ,
Per my research, SharePoint CSOM is client side code, it can access only site collection or below level objects. It's unable for us to get farm using CSOM.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.