I want to create multiple csv files from the data in the main csv file

Solution 1:

Save the whole Excel file as csv named myfile.csv

In the same folder create file split.bat with content:

@echo off
set /a c=0
setlocal ENABLEDELAYEDEXPANSION

for /F "tokens=*" %%A in (myfile.csv) do ( 
  set /a c=c+1   
  echo %%A > !c!.csv
)

Run split.bat and you will get 350+ csv files with one line inside