Hi Svetlana, 

You can’t import Adobe Muse designs straight to Unbounce or for that matter any design/code that you’ve created outside of the Unbounce page builder. (Photoshop, Sketch, etc.)

You’ll have to export the necessary assets and build out the page through the Unbounce page builder. 

Here is the official documentation to get you started. Once you do a page or two and learn the platform, building new pages would become much quicker. 

In my experience, even the most complicated designs take at most 5-6h to implement through Unbounce. 

Best,

Hristian