Light limits in URP

If you use the default Forward rendering pathThe technique that a render pipeline uses to render graphics. Choosing a different rendering path affects how lighting and shading are calculated. Some rendering paths are more suited to different platforms and hardware than others. More info
See in Glossary, the Universal Render Pipeline (URP) has a maximum of 9 lights for each GameObject:

• 1 Main Light, which is a per-pixel light by default. This is the main Directional Light in your scene, or the brightest light.
• 8 Additional Lights, which are also per-pixel lights by default. You can set them as per-vertex lights instead.

For more information about per-pixel and per-vertex lights, refer to Per-pixel and per-vertex lights.

There are also the following limits per camera:

• Desktop and console platforms: 256 Additional Lights
• Mobile platforms: 32 Additional Lights.
• OpenGL ES 3.0 and earlier: 16 Additional Lights.

The Main Light is always visible per camera.

To add more lights per object or per camera, use the Forward+ or Deferred rendering paths instead. For more information, refer to Choose a rendering path in URP

Additional resources

• Lighting settings in the URP asset Inspector window
• Change the maximum number of visible lights in the Forward+ rendering path