I'm stuck on the task build the baby store but I can't find it I'm on level..

Right, though I too are stuck on this I know how to do it.

1. The baby store is next to the gallery in a very small area
near the Town Hall.

2. Get enough Sims to buy the store. ( You may need to level up for this)

3. If you don't already have enough money to buy the store you need to earn some e.g. Get a Job, wait for the daily reward, plant crops or use some of the Cheats featured on this website!

Thanks for reading and I hope this helps this way is not using hacking or any form of Cheats apart from the money part but still, no hacking. Hope this helps, bye! ; )