Click the green flag to get a new set of keys. WARNING: Use this only if A: you forgot the key for your legal copy of Windows 95, or B: for archival or entertainment purposes.
Microsoft for Windows 95 This great video by FlyTech Videos: https://scratch.mit.edu/discuss/youtube/3DCEeASKNDk This can also work for Office 95 and some other Microsoft products from after Win95 but before Win98.