Extract oil from Peugeot 306

And I know that I will certainly reap a lot of spot. But with my Peugeot (306 xsi BJ.94) I can’t read the oil level… I already tried everything… But the fucking thing doesn’t show anything… I’ve already refilled oil, but still I can’t read it. The oil pressure indicator always shows around the 4bar when it’s still standing, when it’s driven, it’s so at 7 bar. Can anyone tell me how much I can j Thank you for your help.