the 1998 app is no longer avaialble from Turbotax and is not supported. you can buy old CD's from the internet. your problems are there's no licnese, it can't be updated, no state programs are available, and we can't even say that if you got the app it could be installed on your computer. (incompatable OS). neither Turbotax nor THE IRS retain copies of returns going back that far. if you have the XXXX.tax1998 file it can be sent to a website like taxprinter and for a fee they'll send you a printout. we don't vouch for them, but others have used them with no complaints
https://www.taxprinter.com/
