As far as I can tell, the Bible doesn’t say for certain whether Joel’s “the last days” refers to the destruction of Jerusalem (as in Matt. 24), or the end of the Jewish age (viz. the coming of the Messiah), or both.
The events Jesus predicted in Matt. 24 have, of course, already happened. And the end of the Jewish age has also already happened.
- The Spirit was “poured forth”. Peter’s “this” was not drunkenness, but the pouring forth of the Spirit upon the apostles; also the prophesy, visions, and dreams which followed (as we find out about later in Acts and elsewhere) - a great outpouring of spiritual blessings and revelations from God, from which we benefit even after their end.
- There was judgment to come, described in common imagery from the prophets. (Again, perhaps the judgment against the Jews, as in Matt. 24. Acts 2:40 seems to support this: “Save yourselves from this perverse generation.”)
- And there was deliverance for those who would seek it. Three thousand sought it that day, and in v. 38 Peter told them how to obtain it.
The prophecies in the book of Joel are very difficult to interpret. The fact that Peter tells us that Pentecost fulfills part of it is helpful. But we belong to the same generation of believers; speaking in tongues, interpreting tongues, being caught up into the empyrean heavens, having visions and dreams, etc... are things to be expected to be found within the Church, but not shared equally by all.
We are looking forward to seeing this movie. The Holy Spirit will speak to us in special ways as needed to help us all get home. However, we must choose life. We must accept the grace, we must cooperate with the redemption that has been wrought for us.