So I did the following steps:
1. Create a 2-point rectangle. (It can be any size)
2. Extruded it! (as much as you want)
3. Used the Loft tool (Select the top face and the right face)
4. Put a bunch of 2-point rectangles on the top of it
5. Extruded those!
6. Make a fit-point sketch (for the melted point)
1. Fusion 360 software