Is anyone able to confirm the legitimacy of being signed up on Apple Records by John F. Smith via Soundcloud? Is it real or a scam?

 

Apple Records was/is the legendary, short-lived Beatles label, no? So i very much doubt it's legit.
Do you mean Apple Music?

 

John F Smith (British 1934-): Still Life of Apples, pair oils on board signed 24cm x 19cm

Source: www.davidduggleby.com/auctions/2266/The-Spring-Art-Sale/96796/

 

It's almost certainly a scam.

I took a quick glance at your SoundCloud and saw that you're making ambient/drone? Even if you're among the best in your genre, it's a small/niche market. Outside of Cryo Chamber and whatnot you aren't really gonna receive any label offers, especially not from a supposed major label. Major labels want pop-oriented, hooky, radio-friendly music, not ambient. And even if all those boxes are checked, it's still expensive and risky to invest in an artist that isn't already well established all over social media.

I wouldn't bother responding to that guy at all, he will be asking you for money soon enough.