Rebuild Ps4 database? - 1

I did some research on how you could possibly improve the performance of your Ps4. In doing so, I came across the "Rebuild database" function. I wanted to ask if there's a possibility that I could lose my scores. I've spent money on some games that don't have a cross save. In other words, if the game is deleted on the Ps4, I lose it completely.

So there's the possibility that the data will be deleted?

Normally there should be no loss of data. But I would still recommend simply backing up the scores to a USB stick (if that's possible, I don't have a PS4, only PS3).

Is there a possibility without having to plug in a USB controller but my front charging socket does not work, the one in front of me where the ext connector is

If you reset your database, nothing will happen except to improve performance. All saved games remain as they are, unless you unplug during the process.