Purgatory is one entrance to Heaven, necessary for some, yes.
No, but that is how the religion of catholiciism teaches its adherents to think. The Bema Seat of Christ happens IN HEAVEN, not to get into Heaven. catholoic thinking is still seeking to earn something that God Grants by His Grace not your merits ... and yes, catholics, enduring purgatory would be ‘earning’, creating a deficit which the god of catholiciism must honor, honoring the eaner.
But according to the much hashed over I Cor. 3 passage, EVERY believer goes through the judgment seat of Christ and receives rewards or loss of rewards for their works. If this were truly a prooftext for Purgatory, then how will some escape this “entrance” as NOT necessary?