File conversion

There is. (menu file > import pdf)
But it is not very good ... (because very old Audiveris)
If you want free , google search for Audiveris. Or pay lots of money for a commercial option.
Note (i guess nobody knows or cares) the tems of use: https://musescore.com/legal/terms :

7.7 By uploading any PDF notation files for conversion into MSCZ format files on, through or in connection with the Service, you hereby grant to MuseScore a non-exclusive, fully-paid and royalty-free, sublicensable, perpetual, and worldwide license to use, modify, delete from, add to, publicly perform, publicly display, reproduce, and distribute such converted files solely on, through or in connection with the Service, including, without limitation, through the Service to applications, widgets, websites or mobile, desktop, including, without limitation, distributing part or all of the Service and any converted files included therein, in any media formats and through any media channels, including without limitation, third party social media and streaming platforms. Except as expressly provided for herein, this limited license does not grant MuseScore the right to sell or otherwise distribute your converted files outside of the Service.*

AI hasn't reall come far enough to turn pictures into music with any degree of reliability. But you are definitely welcome to try the various programs out there that make the attempt, including the one used by the Import PDF service within MuseScore Studio/ With luck, you mgiht get results that don't take twice as long to edit and correct as simply entering the music directly. But I wouldn't count on it. Time spent learning to enter music directly is almost always more productive.