Hi, Cameron. I'm Robinson, and I’m happy to help you today.
You can use the Command Prompt to unhide the folder.
1-Click on Start, search for Command Prompt
2-Right-click on that and select "Run as Administrator"
3-Paste this command and press Enter:
attrib -h -r -s /s /d %USERPROFILE%\Documents
4-Close the Command Prompt and check if you can access the Documents folder
If you receive any error message, please take a screenshot and attach it here to help identify what is causing the problem.
I hope this information helps. If you have any questions, please let me know and I'll be glad to assist you further.