Yamaha zeal 1991 fuel and engine oil was leaking somewhere from the engine block... was flowing like a river out of the engine block.... i suspect the piston rings are shot but need a better opinion

If your rings were shot and the engine was running you would see billows of blue smoke coming out the pipes, as well as oil. If not running, then your fuel would end up in your sump inflating the amount of oil in there. (this does happen on all bikes only ridden around town, get it out on the highway to burn off the excess fuel then recheck your oil level.)
I'm wondering if you left your fuel tap on overnight (if it has one) if so, then you will have fuel running back out either the carbs or the boot that goes from the carb to the engine. Oil will leak if your valve seals are shot. it is possible that it was only fuel that was stained with a bit of oil.