Improve score display UI

[kshitija-1201]

Pull Request

Description

Improved the score display UI to make it more attractive and readable.

Changes Made

• Increased score font size and improved styling
• Added a background box for score display
• Enhanced Game Over screen with a centered popup-style box
• Improved readability of score and final score text
• Updated positioning and visual appearance of UI elements

Fixes #14

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Type of Change

• Bug fix
• New feature
• [+] UI improvement
• Documentation update
• Performance improvement

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Checklist

• [+] My code follows the project style
• [+] I tested my changes
• I have updated documentation if needed
• [+] My changes generate no new warnings

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Screenshots (if applicable)

Before:

• Basic score text displayed at the top of the screen.

After:

• Styled score panel with improved font and visibility.
• Enhanced Game Over popup with final score display.