No you can not.
Drain it out and replace with proper oil
if your scooter has a engine oil dip stick then it is a four stroke. if it has a oil tank that you have to put oil in then it is 2 stroke.
2 stroke and 2 cycle mean the same thing
No - it is formulated very differently. The crankcase of a four stroke engine needs conventional engine oil. DO NOT use two stroke oil in the crankcase.
Nothing at all!
Usually, a small 2-stroke engine wouldn't have any oil put in it directly at all. It would have a certain percentage of oil mixed into the fuel instead.
That would depend on whether the engine is a 2-stroke or a 4-stroke. You can determine by looking for an oil filler spout or filler cap on the engine. If it has one, the engine is a 4-stroke and the oil is added through there. If it doesn't have one, the engine is a 2-stroke and 2-cycle oil must be added to the fuel in the recommended ratio.
If it is a 2-stroke engine, 2-cycle engine oil is added to the gasoline. If the engine is 4-stroke, regular 30W motor oil is used. To tell if your engine is 2-stroke or 4-stroke, look for a spout where oil is poured into the engine. If there is no spout, then the engine is 2-stroke and 2-cycle oil must be added to the gasoline.
No if it says 4 stroke or 4 cycle you can not put it in a 2 stroke or 2cycle engine.
The best way to know if an engine is 2-stroke or 4-stroke, is to look for an oil spout. If the engine has an oil spout where oil has to be poured into, it is a 4-stroke. If the engine has no oil spout and the oil has to be added to the fuel, then it is a 2-stroke.
It is possible to use 4-stroke oil in a 2-stroke engine in an emergency situation. You should not use this oil in the long term as it will damage the engine.
A 2-stroke engine requires adding 2-cycle oil with the gasoline.