u/Next-Toe-8223

So I suck at blender I’m really terrible but I really really really love block bench because it has less buttons and it gets to the point plus my iq is 85 so hard for me to comprehend very well, but I get by. But at the same time I don’t think I’m sure I’m doing it right, but I tried grouping the body with the armateur, but unfortunately it won’t let me, so I had to group the armateur with the body and it won’t let me select calculated vertex weight. What am I doing wrong please help.

Ps.

I also need help importing it to unity. Thanks