For Christ has not entered the holy places made with hands, which are copies of the true, but into heaven itself, now to appear in the presence of God for us; 25 not that He should offer Himself often… 26 but now, once at the end of the ages, He has appeared to put away sin by the sacrifice of Himself.
Hebrews 9:24-26

Because Jesus was not a member of the priestly tribe of Levi or the priesthood of Aaron, He never entered the Holy of Holies in the earthly temple. As a member of the kingly tribe of Judah, he was forbidden to do so. But as our Great High Priest (Hebrews 4:14-16), Jesus did offer a sacrifice for the sins of His people. Did He enter into a literal spiritual temple in Heavenly to offer the sacrifice? The text says, “Yes,” although we do not know exactly what that means.

What we do know is that our Great High Priest didn’t offer the blood of animals in a temple made with human hands that could never atone for sin (Hebrews 10:4). And we know that those sacrifices were offered continually as a reminder that they could not fully atone for sin. Instead, Jesus offered His own sinless blood—the blood of the Lamb of God that completely atones for, and takes away the since of all His people, from everywhere in the world, for all of time. And we know that when that sacrifice was offered by Jesus, and accepted by our Heavenly Father, there are no more sacrifices. At all. Ever again. Why? Because the sacrificial death of Jesus is all-sufficient.

Footnote: Any who attempt to offer any other, or any additional sacrifice, thereby declare Jesus and His sacrifice are insufficient. Be advised, you do not want to do that!