My model is see-through with black lines I'm pretty new to blender, so i apologize if this question is a little dumb, i was following a blender tutorial but i accidentally pressed a key and i don't know which one i pressed, and now my model is sort of see through, here's the picture
Probably, you pressed Z and then you changed the viewport shading so now you are in wireframe shading.
Press Z to change to Solid Shading via the pie menu or use the topbar as shown below: