How can I remove menu appears on right side of my MacBook Pro screen?

"Thanks, Where is "edit widgets" when I right click on the desktop?"

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You are welcome.

Thank you for the screenshot.

What's that Web Browser? It may be a feature of it --something to "Hide" in the View menu.

"Get Rid of Menu on Right Side of Screen: Hi, I'd like to get rid of the menu that appears on the right side of the screen whenever I hover over that area. Thanks!"

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May be a widget. So, try Closing it:

1. Right-Click: the Desktop
2. Select: Edit Widgets...
3. Drag: the window to the widgets screen.

When I right-click on the Desktop in Sequoia, there is an Edit Widgets item. But your tag line indicates that you are running Monterey.

iMore – A history of widgets on the Mac - from Dashboard to Desktop on macOS Sonoma

Apple has played around with adding and removing widgets on the Mac for a long time, but it appears that they introduced the current incarnation, with widgets integrated into the Desktop, in Sonoma. That would explain why you don't see an Edit Widgets item – your version of macOS doesn't have that feature.