Among the options provided, covalent bonds are generally considered the strongest type of bond. Covalent bonds involve the sharing of electron pairs between atoms, leading to strong attractions.
In comparison, metallic bonds involve a sea of electrons around metal ions, hydrogen bonds are weaker attractive forces between molecules (usually involving hydrogen), and "valence bonds" is not typically used as a standard category in the same way as the others.
So, the strongest bond in your list is covalent bonds.