For a realistic "sign" look, consider using monoline or script fonts such as: : Clean, futuristic, and highly readable. NeonTube : Mimics the look of traditional glass tubing.
: Platforms like Pixabay and Shutterstock offer thousands of free and premium 4K neon line backgrounds and animated text clips. Neon Lines | 4K
If you want to create your own high-resolution neon text or line effects, these step-by-step guides focus on achieving professional-grade glows: For a realistic "sign" look, consider using monoline