The adjective شديد means "strong." The noun البنية means "physique" or "build."

There are multiple ways to express this expression in English:

رجلاً حسَن الخَلْق شديد البنية

a handsome, strong man
a good-looking, strong-bodied man
a comely, strongly built man
a man of handsome appearance and strong physique
etc.

"Strong-bodied" means of outstanding strength. "Able-bodied" means "fit" or "has no disability."