There is much scripture that refutes Preterism, most notably the book of Zechariah.
Zec 14:1 Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee.
2 For I will gather all nations against Jerusalem to battle; and the city shall be taken, and the houses rifled, and the women ravished; and half of the city shall go forth into captivity, and the residue of the people shall not be cut off from the city.
3 Then shall the LORD go forth, and fight against those nations, as when he fought in the day of battle.
4 And his feet shall stand in that day upon the mount of Olives, which is before Jerusalem on the east, and the mount of Olives shall cleave in the midst thereof toward the east and toward the west, and there shall be a very great valley; and half of the mountain shall remove toward the north, and half of it toward the south.
God did not fight for Jerusalem against all the nations that came upon it in 70 A.D. Jesus did not come down and set foot on the Mount of Olives, and the mountain did not divide in two, providing a valley for the Jews to escape.
Zec 14:9 And the LORD shall be king over all the earth: in that day shall there be one LORD, and his name one.
10 All the land shall be turned as a plain from Geba to Rimmon south of Jerusalem: and it shall be lifted up, and inhabited in her place, from Benjamin's gate unto the place of the first gate, unto the corner gate, and from the tower of Hananeel unto the king's winepresses.
11 And men shall dwell in it, and there shall be no more utter destruction; but Jerusalem shall be safely inhabited.
12 And this shall be the plague wherewith the LORD will smite all the people that have fought against Jerusalem; Their flesh shall consume away while they stand upon their feet, and their eyes shall consume away in their holes, and their tongue shall consume away in their mouth.
Jesus didn't become king over all the earth in 70 A.D.
The land wasn't turned into a plain from Geba to Rimmon in 70 A.D.
Jerusalem has not been safely inhabited since 70 A.D.
Those men who came against Jerusalem in 70 A.D. were not destroyed in the manner shown here, their flesh did not consume away while they stood on their feet, their eyes did not consume away in their sockets, and their tongues did not consume away in their mouths. This actually sounds very similar to the effects of an atomic explosion, tremendous heat.
Nobody believes Preterism, because none of this happened. You will never get more than a few folks to believe this stuff, because it is not believable