Of course, 
Contact us by sending us a message on the blendermarket. 

If you have a 'personal': Only up to 2 seats, otherwise No.

If you have a 'team' license: Yes.

You can share everything that is licensed under GPL license. The digital assets, node groups, textures or blends files cannot be redistributed without the author's permission as they are released under "Standard Royalty Free".

Assuming you are using assets that can be shared, Yes!  
You can also contact us, if your biome pack is well made, we can inform the users about your creation. 

No, You cannot redistribute the Scatter5 node group by yourself, or in your own plugin or product. Not without our permission, because the Scatter5 node groups are licensed under the  "Standard Royalty-Free" license.  

Assuming you are using assets that can be shared, yes, sharing a blender scene with a Scatter5 geometry node node group still present in the scene is allowed. You have our permission to do so, as long as the goal is sharing your art, and not sharing the node tree by itself. 

No. 
These assets are licensed under the "Standard Royalty-Free" license.

Yes, of course! 

The Scatter5 product has various licenses:

• The python plugin script is licensed under "GPL", like every other blender plugins.
• The content of the default biome library is licensed under "Standard Royalty-Free"
• The geometry-node scattering engine is licensed under "Standard Royalty-Free"