How much a 1944 120mm shell casing is worth its 33 inches tall and 7and a half in wide at the base the bottom says for dummy projectile and the center ring says empty its gold in color?

The value of a 1944 120mm shell casing can vary widely based on factors such as condition, rarity, and demand among collectors. Generally, a dummy shell casing like the one you described might be worth anywhere from $50 to a few hundred dollars, depending on its specific features and historical significance. It's best to consult with a military antiques dealer or appraiser for a more accurate valuation.