I am trying to find the solubility of benzoic acid in different solvents to prepare a liquid-liquid extraction
Funny you're looking at solubility of benzoic acid. A few years ago, there was an Open Notebook Science challenge to measure solubility:


  The first round of this challenge calls upon people with access to materials and equipment to measure the solubility of compounds (aldehydes, amines and carboxylic acids are a priority) in organic solvents and report their findings using Open Notebook Science


So the raw data is available through Google Sheets here

There is a general web service for predicting solubility.

For example, you can predict the solubility of benzoic acid using Abraham solvation parameters

There used to be a search mechanism, but I'll have to ask the authors - it's been a few years.