Environment score: Here, hydrophobic residues as represented as orange stars... so the left conformation is good (all the hydrophobics together) while the rightmost conformation is bad (with the hydrophobic amino acids not touching).
Pair-score: Two conformations of a polypeptide are shown, one (top) where the chain is folded back on itself bringing two cysteins together (yellow+yellow = possible disulphide bond) and forming a salt-bridge (blue+red = opposites attract). The conformation at bottom does not make these pairings and the pair-score would, thus, favor the top conformation.