Addendum: You can also do that in the Linux command shell.

cd /opt/retropie/configs find -type f -newermt yesterday

-type f lists only files, not directories.
-newermt yesterday shows only files whose modification time is newer than yesterday.

If you append -ls to the command, you'll get a more detailed output.

find -type f -newermt yesterday -ls

See here for more examples.

You'd need to modify /etc/samba/smb.conf and add the folder you want to share, with a similar set of configuration options as the other RetroPie share

[...] [pi-home] comment = pi-home path = "/home/pi/" writeable = yes guest ok = yes create mask = 0644 directory mask = 0755

The easiest way would be to enable SSH and use WinSCP to see the files on the RetroPie system, you'll have access to the entire filesystem.

@SonPluck /dev/shm/runcommand.log

It won't work if you remove the SD to plug in another computer because files under /dev/shm are RAM based, which means that they only exist while the raspi is on.

@rapidfire

if i delete a rom within emulationstation does it also delete all the scraped data for it aswell?

No, it doesn't

if i want to backup all my data from the sd card using samba shares. which folder contains the scraped info?

On the pi it is /opt/retropie/configs/all/emulationstation or /home/pi/.emulationstation and via samba share it is (I guess) configs/all/emulationstation
this (or these) contains 2 folders with scraped data:

gamelists downloaded_images