moving same notes to from bass to treble

See https://musescore.org/en/handbook/3/cross-staff-notation
Or use copy/cut and paste

The best way to do this depends entirely on the reason for them being on the original staff and your reason for wanting them on the other instead. Cross-staff notation works great for the case where the reason they are on one staff is that "logically" they belong there, and the reason you want to move them is to make it clear they are to be played with the other hand. If on the other hand the reason the notes are on the staff they are on is because this was the result of MIDI import, cross-staff notation won't be good at all. Ther best solution would be to go back to the DAW or other program that creates the MIDI file, and this time have it export separate tracks for the staves, or at least put the notes on separate channels. Otherwise you'll have to settle for cut and paste within MuseScore, and it's very tricky because by then, the rhythms have already been notated based on the original staves, and it may not be possible to move the note without altering the notation of the destination (rules of notation won't allow it).

If you attach your score and explain in more detail what you are trying to do and why, we can understand and assist better.