How to add fill to unclosed shape?

Hi, i can’t recreate this object from the scratch, because i can’t add fill to unclosed shape. Any ideas? Thanks in advance

Are you sure there is only 1 object here? I see 2 objects here: a stroke path and a shape with a closed path.

yes, i’m sure there is only one object but it may looks like two because of rounded endings

Could you share a file link with this object?

sure

Very interesting!
Was this object created in Figma or did you import the SVG?