I need a little help

I'm doing a project following a tutorial, but these icons appeared on my character (in editor mode only) and I can't remove them, can someone help me? thanks.

 

That's what's known as a "gizmo" from some script. Basically, it's an icon that gets drawn by a component that you have on some game object at that location.

If you click the "Gizmos" button along the top of the Scene View, you should get a dropdown that gives a lot of options. You can disable gizmos for individual scripts, or scale all the icons down to effectively hide them.

(It's kind of amusing that in your screenshot, the two white lines from the camera's frustrum coincidentally seem to point at the Gizmos button, and the cinemachine gizmo on the camera almost looks like it's underlining the Gizmos button. It's as though your screenshot was trying to tell you the answer. )

 

OMG THANK YOU !!!