Sean081799, I sympathize--the process of importing a Musescore file into Finale Notepad through MusicXML typically messes it up (removes measure numbers, mangles alignment, harder to put the website URL on the file to begin with).
With that being said, do you know enough XML to edit the MusicXML file (in a text editor) just before importing it into Finale Notepad (e.g. insert "<measure-numbering>system</measure-numbering>" within <print> tags but after </system-layout> tags to restore measure numbers for the first measure of each line), or would you rather have someone with paid Finale adjust your .mus? I'm in a similar situation to you, where all we have is Musescore and Finale Notepad. It's possible you might need multiple people's help, as I haven't been able to figure out how to reliably edit things like numbers of measures per line with MusicXML alone.
You can adjust things like the positioning of dynamic markings with Finale Notepad alone, though.
With that being said, if your screenshots are any indication, we'll likely be adjusting your .mus so it looks even better than your PDF--some of your articulation markings in the second PDF screenshot jam into the beams of the piano part above, for example, and this makes your PDF less readable.