Welcome! Here's a guide on how to access folder options and change view settings.
Note: This guide is based off Windows 11 but should be similar to at least Windows 10.
Step 1: Open File Explorer
Step 2: Click the 3 dots
Step 3: Click "Options"
Step 4: Go to the "View" tab
Step 5: Here you can disable Hide File Extensions, Show Hidden Files, and more!
You can also access Folder Options by clicking "Tools" in Control Panel and clicking "Folder Options..."
The end! Hope this helped!