Can anyone tell me how many CDS I can make with only 100 grms of sodium chlorite? Thanks a lot

Making sodium chlorite is a different matter! Not something to be done at home, I think but the starting point, I gather is common salt (sodium chloride). Making chlorine dioxide solution from purchased sodium chlorite, either in dry or dissolved form, is more straightforward and there are plenty of methodologies described on this forum and elsewhere including my own high-efficiency method that will make 15 litres of [3000ppm] CDS from 100g of NaClO₂.