In this case getting the exact SafeDisc version you have to scan the .exe file in your installation folder using Protection ID which is also mentioned in the guide as Aray scanner is out of date.
According to our copy protection list Sims2 uses SafeDisc 3.20.022 on CD1 so
CloneCD should be able to create a working backup using emulation a guide can be found
here update CloneCD to the latest version before your start.
p.s. This 'will' work for Sims2 version 1.00 but the expansion packs will probably update SafeDisc to a higher version which may stop your backup from working.