Unfortunately, AFAIK, the workflow you describe is not permitted under the Microsoft Services Agreement and Microsoft Copilot Terms of Use if their restrictions on bots or other automated access apply. Using Power Automate Desktop to enter a prompt into the normal consumer Copilot website, click Send, wait for the response, and automatically copy the complete response into Notepad is automated interaction with the Copilot service. The fact that you manually start the flow, use it only occasionally, or use it for personal coding and learning does not create an exception to that restriction.
Manual use is permitted. You can manually open Copilot, type or paste a prompt, submit it, wait for the response, and manually copy the response into Notepad. The restriction concerns having PAD perform those interactions automatically. It is more accurate to describe the issue as automated UI interaction or RPA, rather than necessarily calling it scraping.
Power Automate Desktop itself is not prohibited. You can use it to automate your own computer and applications where automation is allowed. The problem is using it as a bot to operate the consumer Copilot service. If you want a programmatic workflow, you might consider using a supported API or automation service such as Azure OpenAI or an appropriate AI Builder capability rather than automating the consumer Copilot webpage.
More at https://www.microsoft.com/en-us/microsoft-copilot/for-individuals/termsofuse
If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.
hth
Marcin