3/4 time whole note

In a regular 3/4 measure a whole note simply won't fit. You can, however, make that 3/4 meassure irregular: right click into the measure -> measure propertzies -> actual duration -> 4/4)

Whole notes are indeed incorrect in 4/4 time and whatever sheet music you have that uses them is in error - or at least, not adhering to the stamdard typographical conventions. But for the record, whole *rests* are correct in 3/4 time. Or more precisely, the symbol used to indicate a whole rest is also used used for what is sometimes called a "measure rest" - a reat of the duration of the measure, regardless of the length of the measure. And you'll see MuseScore fills you score with these by default. It's just a shorthand for an empty measure, that saves space seems just as easy to read. But as soon as you change from that rest to actual notes, you are supposed to indicate the proper length - dotted half for 3/4 time.

finale does allow you to put a whole note into a 3/4 measure,but it definitely doesn"t do this by default - you have to go out of your way to make it happen. Actually, it's rather too easy to do it accidentally, but Fnale does try to discourage. MuseScore also makes it possible to put a whole note in 3/4, but makes it so you're very unlikely to do so accidentally. You do it by right clicking an emoty place in the measure to bring up note properties, then changing the actual (as oppsed to "nominal") time signature to 4/4. Now you have a 4/4 measure - and it will play back will four beats - but it won't actually display the tme signature change. So you'd be able to get a whole note into the measure.

But again, you normally wouldnt want to do this, as it is incorrect notation. Someone reading wouldn,t understand if you meant the note to last for three beats (the normal length of a measure in 3/4) or four (the normal leng of a whole note). But the ability is there for the rare cases where for whatever reason it is what you need.

Incorrect. Enter a whole note into a 3/4 measure and you'll get a dotted half tied to a 1/4 note which in total has the same duration as a whole note.

In 4/4 whole notes are permitted as long as they start the measure. If you put them on a later beat you will get notes tied to the next measure.

BTW, there is a workaround. I've occasionally seen things like this. If you are copying music and want it to look the same, you can create a tuplet. In 3/4 select the measure rest and press ctrl+4 and you will get 1 4 1/4 rest tuplet. You can then enter a whole note and make the tuplet number and bracket invisible.