>how can we read data from barcode labels in VFP

You need a barcode reader; if you use a wedge-style reader, it functions as if the barcoded value were typed in on the keyboard.

>and how can we create barcode from VFP for exp. we have stock such as IDname 869033123456 (barcode generate)
>

You have to purchase a barcode font or dedicated barcode software that writes a barcode rather than normal text.