Set the render queue for a material in the Built-In Render Pipeline

By default, Unity places objects in the render queue specified in their Unity shaderA program that runs on the GPU. More info
See in Glossary. You define this value using the [Queue] SubShader tag.

You can override this value on a per-material basis.

In the Unity Editor, you can do this in the material Inspector by setting the Render Queue property. In a C# script, you can do this by setting the value of Material.renderQueue using the Rendering.RenderQueue enum.

Render queues and sorting behaviours in the Built-in Render Pipeline

Set how a camera sorts materials in the Built-In Render Pipeline

Unity Manual

Set the render queue for a material in the Built-In Render Pipeline