Okay hold on a minute. "Yesterday" came out in September of '65 as a single here in the states. Capitol pulled it from an album to release it as a single. The Beatles were not planning on it having a single release - it was supposed to just be an album cut on
Help! It's a good thing Capitol pulled it for a single because it went to #1 and is clearly a standout track.
Apple Records was not formed until 1968. There was no Apple Records when "Yesterday" was released back in '65.
In fact, the Beatles had enough power over Parlophone, their label in the UK, to block its release as a single. Not so with Capitol in the US, where it was released as a 45.
And actually, at the time, a Paul McCartney solo album was considered by Capitol:
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Apparently, at the time even George Martin and Brian Epstein discussed whether or not "Yesterday" should be credited to The Beatles as a group or as McCartney solo.
I know some of this is getting down into the weeds of Beatles history, but it's pretty fascinating nevertheless.