If you were playing an artificer you add the modifier to cure light wounds, but as a wizard I cant think of any.

Evocation Wizards get to add damage to a bunch of stuff, but besides that, there are very few wizard spells.

These include:

• Bigby's Hand/Arcane Hand (Grasping Hand, the shove also pushes farther based on your modifier)
• Wish, to cast spells not on your list, such as Spiritual Weapon.

Some spells can help you add other modifiers to damage by being weapon-based:

• Green Flame Blade/Booming Blade (enhances a weapon)
• Shadow Blade (makes a weapon)

Honorable mention to summoning spells that use your modifier to determine hit bonus:

• Faithful Hound
• Tasha's/Fizban's Summoning Spells