UIListLayout and UIGridLayout have a property called “AbsoluteContentSize” which is just how much space all the content take up in the X and Y axis. ScrollingFrame’s have a property called “CanvasSize” which defines how big the Canvas should be. CanvasSize is defined as a UDim2 of (scaleX, offsetX, scaleY, offsetY). If you set the offset values to the corresponding AbsoluteContentSize values, you will get a ScrollingFrame that can only scroll as far as the content take up.
If you want to read more about this, you can look at this guide: