Just bookmark the page or favorite it
No suppor t

Guys. STOP ASKING “How do I bookmark” HERE. This is thread hijacking.

People have been saying that you can just favorite and that favorite is a bookmark, but in these days people on Scratch take favorites more than a sign of the fact that you really love the project and not as a bookmark. And what if you don’t want to clutter your profile page? What if the project is something you didn’t view yet and it may be something really bad and you without the info display the trash project on your profile? Use browser built-in bookmarking? What if I have more important stuff than a project that has the potential to be absolute hot garbage? I don’t want my bookmark page to be cluttered with hot garbage!
Strong support.

This is literally what the favorites tab is for. No support.

Paddle I think in one topic said that Favorites are kind of like bookmarks so you can view them again anytime without copying the url again.
That's maybe what favorites are for, no support.