i made a way to do it but its very inefficient and doesnt always work. i made a singleton and put a variable for bullet position. then i converted that to tilemap position and deleted any tile that was in that position. the problem is that it only works with the most recent bullet.
for the tilemap
bp = world_to_map(global.bullet_position)
for the bullet
var timer = 1
if timer >= 0:
timer -= delta
global.bullet_position = position
if theres any better way please let me know.