Go to File > Export > Zipped loop package . This saves your .flp project file along with every sample used into a single .zip file.
Instead of searching for a modified version, you can achieve a legal and stable portable-like setup by following these steps from Image-Line Support Install on a Fast External Drive fl studio 20 portable
You're looking for a review of FL Studio 20 Portable! Go to File > Export > Zipped loop package
: A completely rebuilt PDC system that allows manual and automatic compensation to work together. Official Alternative: FL Studio Mobile fl studio 20 portable