How can I import a .c4d static model (Cinema 4d) on Blender? Is there any plugin could help me? I didn't notice anything on Internet.
Maxon's Cinema 4D is a closed and proprietary tool and there is no way to access the .c4d file in a legal, safe and usable way other than C4D itself.
But you can use one of the many other export methods available.
".obj" , ".fbx" , ".dae" .... for simple mesh transfer and Alembic (.abc) for dynamic and advanced export.
If, like me, you don't have Cinema 4D, but need to get a file into Blender, there is at least one online conversion facility (https://anyconv.com/c4d-converter/) that can convert the file to either .fbx or .obj, which can then be imported into Blender. It doesn't work on all files but maybe worth a try.