Lightroom Classic does not open and I cant uninstall either ?

Adobe's official basic troubleshooting steps for Lightroom Classic are the place to start:

1. Check whether your issue is listed under Known issues in Lightroom Classic.

2. Install the latest Lightroom Classic updates.

3. Install Windows operating system updates.

4. Install graphics (GPU) driver updates — go directly to your card manufacturer's website, as Windows Update doesn't always have the newest driver.

5. Restore preferences: quit Lightroom Classic, then start it while holding Shift + Alt (Windows) and click Yes when asked to reset preferences.

Full guide: https://helpx.adobe.com/lightroom-classic/desktop/technical-support/performance-guidelines/lightroom-basic-troubleshooting-fix-most-issues.html

To help you further, could you add what exactly happens when you try to open it (nothing at all, a splash screen, or an error message — please quote the full text), your Lightroom Classic version, and any error message shown when you try to uninstall?