There is a webpage that doesn't appear on the website however it appears on the google search engine. is there any way so I can make the page hidden and not available on the google search engine at all.
correct the above,
How to hide a web page from appearing on the search engine.
Editing your robots.txt file is probably the easiest.
If you are using the web part, you can manage this also on the particular page's Properties -> Navigation tab, in the Search and SEO section.
Please, sign in to be able to submit a new answer.