Step 3. Find the Enabled name registry DWORD (REG_DWORD). Then set double-click on it and set it Value Data.
A value of 0 will disable Windows Script Host.
A value of 1 will enable Windows Script Host.
If you don’t look for the Enabled name registry DWORD (REG_DWORD), then you may need to create it.
Step 4. Finally, you can close Registry Editor and reboot your system.
In case if Windows Script Host is disabled, you will get the "Windows Script Host access is disabled on this machine" error. Read this article to learn how to fix it.
You can see this video below to learn how to disable or enable Windows Script Host in Windows 10:

Hope something helps you.

If you are using Windows 10 Version 1703 or later, you can run troubleshooters from Settings app > Update & security > Troubleshoot. 

How To Use Built-in Troubleshooters In Windows 10

Step 1. Find the troubleshooting packages at Control Panel > Troubleshooting > View all. Here are the troubleshooting packages available:

List of available built-in troubleshooters in Windows 10

Select the correct troubleshooter and click it to open its wizard.

Step 2. Select Advanced and click Apply repairs automatically option. Click Next.

Step 3. Click Try troubleshooting as an administrator option.

Step 4. The troubleshooter will find problems and cross-check on the default settings.

If the troubleshooter looks for a problem, it will automatically try to fix it.

Step 5. Finally, you click View detailed information link at the bottom of this window to have complete information about troubleshooting operation.

That's about it.

Issue: 

The error "You'll need a new app to open this - ms-windows-store" occurred when my start menu first stopped functioning. After, I tried to run PowerShell commands through the command prompt and all it has done was remove all my Windows 10 apps as well as the store. Is there any way to reinstall it through some way? 

FIX: Windows 10 You'll need a new app to open this ms-windows-store

Step 1. Open an elevated powershell. To do so, follow these steps:

• Right click start.

• Select command prompt (admin).

• Enter "powershell" to open an elevated powershell.

Step 2. Run the following command:

Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}

Step 3. After executing this command, you can now close Windows PowerShell and then restart your system.

That's about it.