From the time that the jews entered the land of israel until the temple was built did they make the Passover sacrifice? Did they have a Seder? If they had a Seder what did they say for hallel since the psalms were not yet written? Thank you Steven grossman

Shalom, Thank you for your interesting question. Passover was certainly celebrated from when the Jewish people entered the land of Israel (see the Book Of Joshua chapter 5). Also, they certainly recited some form of Hallel. There are rabbinic opinions who attribute (at least parts of) Hallel to Moses, and according to them we have no question. Even according to those who attribute Hallel to King David, it could be that they recited a different, earlier, form of songs of praise to G-d. Blessings.