To chart on the Billboard charts you must sell a certain amount of CD's or digital sales in a week.
Data is compiles from sales and radio plays by Soundscan. The sale of music is reported three ways, retail Sales, online sales and venue sales. When you release your music you must fill out a form with Soundscan and fax it to them. The form will include the artist or band name, album or single name and the barcode number among other things. Submitting to Soundscan is free but if you want detailed reports on how your music is doing then that will cost you.
For more info visit Neilson Soundscan here.
Artists and bands submit your music to
www.hardcoremix.com (Rock,Pop,Country,Jazz,Electro,Gospel and more)
Submit music on either site