https://vrmodels.store/avatars/41582-gobbie.html

Also if you need to convert your model to vrchat, yo need blender (in case model is not rigged yet) and do a complete rig, if the model already haves a rig, maybe can be basic, and do not include facial expressions such talk or blink

if the avatar is already rigged and you dont wanna rig the face, just import it to unity, an put on her an vrc avatar descriptor, make a vrc menu and vrc parameters, put it into vrc avatar descriptor, add gogoloco, and upload, this is a very very basic configuration but let you put the 3D model on the game, (vrmodels one is fully vrchat ready)