Not sure, but I'll bet I could do at least 250 songs, including lyrics, from memory. Probably could do 100 Merle, Hank, and the Georges songs from memory, plus endless 50's and 60's r&r.
There are a couple thousand on my laptop, tablet and keyboard. Still, nearly every night, I get requests for songs I probably should know but don't remember. Sometimes, if I can spare the time during the evening, instead of taking a break I'll make a quick trip to Youtube and/or Google searchand find it is worth a large tip.
I'm a prostitute. People pay me to play their favorite songs.
DonM

P.S. It is interesting that I never forget the songs I learned from listening to them and learning the chords by hearing. If I start out doing a song looking at lyrics and chords, or music sheet, it is really hard to not need them.