AT&T Corp will offer its WorldNet Internet customers access to H&R Block Inc’s CompuServe Inc on-line service at a discount to the normal price, to provide a package of services including local, long distance, wireless and on-line offers, the companies said, with the price to be announced at a later date. AT&T announced a similar deal with America Online Inc in March (CI No 2,870). It said that since it started taking in orders five weeks ago it has received 360,000 the service