Your vertices 3D model usually isn't showing due to hidden visibility settings, incorrect display modes, or temporary software glitches.
Visibility settings—check if vertices are toggled off in your tool's view menu. Display modes—many 3D software defaults to showing faces/edges instead of vertices. Glitches—restarting the program or refreshing the view can clear temporary issues.
If it still doesn't appear, try resetting your view preferences—this simple step often fixes persistent display problems without extra work.