Depending on the arbor size, Harbor Freight sells a laser which mounts to the saw's arbor... I can't say I've used the product, but it has reasonably decent reviews and is inexpensive. I think Home Depot/Lowes might sell a similar product for $10 more or so.
My 12" Craftsman also had a mis-aligned laser (it was parallel, but 3/16" away from the actual blade's cut). Near where the laser is on the blade guard there were some black plastic caps/plugs that explicitly had a label which said do not remove. I removed them and with a Phillips head screwdriver was able to adjust the laser to satisfactory adjustment and didn't mess anything up. My saw is now projecting a laser parallel to the blade, square/perpendicular to the stock and accurate within 1/64" of the blade's cut. This would also be a great time to check to see if your blade is square horizontally and vertically and make any adjustments per your user manual. I can't say that'd I'd rely on the laser 100%, but at the end of the day, it's infinitely more useful now compared to before. It doesn't replace bringing the blade down on the stock and checking the accuracy of the cut, but it's perfect for ballparking or if you don't need ridiculously precise tolerances. As always, measure twice, cut once.
Here's a link to the arbor laser. harborfreight.com/laser-arbor-disc-96401.html