Hello SrSGr and welcome to our forum -
I'm confused, have you bought the car or just looking at it?
If you bought it, I would suggest that you clean up the area that is leaking (with engine cleaner) then observe if it is still leaking and where and how much.
Most of the time those oil leaks are from the front engine cover. The fix is to remove and reseal the engine cover, which is time consuming or expensive.
If you haven't bought the car, it's your call -