Welcome to the forums @Nali!
Godot supports a some file formats for 3D files with animations, primarily GLFT and Collada. I would recommend using a GLTF export if you can, as its the primary format going forward. This page for Babylon JS explains how to export a GLTF file in 3Ds Max, which can probably be used to make a GLTF file that you can use in Godot.
For exporting from Godot and importing in 3Ds Max, there is currently no way to export a Godot scene in a way that 3D creation suites can parse, but future Godot versions will support GLTF scene exports.
