What is the vsepr model for CHCl3?

##CHCl_3## would have an ##AX_4## designation. This would make its shape tetrahedral. It’s just like ##CH_4## but with Cl atoms replacing three of the hydrogens.
The molecule has a central carbon. There would be a single covalent bond to three chlorine atoms and a single bond to the one hydrogen atom.
VESPR stands for valence shell electron pair repulsion. This theory basically says that and non-bonding electron pairs of the central atom in a molecule will repel (push away from) each other in three dimensional space and this gives the molecules their shape.
We can use the following notations when examining a Lewis structure of a molecule.
A = central atom
X = peripheral atoms
E = non-bonding electron pairs of the central atom
##AX_2## = linear molecule (example ##CO_2##)
##AX_3## = trigonal planar (example ##AlH_3##)
##AX_3E## = trigonal pyrimidal (ex. ##NH_3##)
##AX_2E_2## = bent (ex. ##H_2O##)
##AX_4## = tetrahedral molecule (ex ##CH_4##)