Response: Yes, holding a Lucky Egg in Pokémon Scarlet and Violet will boost the experience gained by the Pokémon holding it. The Lucky Egg increases the share of experience that a Pokémon receives by 50%.

Here are the detailed steps to obtain and use a Lucky Egg:

### Obtaining the Lucky Egg

1. **Complete Five Gyms**: You can complete the gyms in any order you wish in Pokémon Scarlet and Violet.
2. **Head to the Sixth Gym**: Once you have completed five gyms, head to the sixth one.
3. **Receive the Lucky Egg**: Inside the sixth gym, Professor Jacq will appear and give you the Lucky Egg.

### Using the Lucky Egg

1. **Give It to a Pokémon**: Simply give the Lucky Egg to a Pokémon in your party.
2. **Ensure Normal Battles**: The Lucky Egg only works during normal battles against wild Pokémon or other trainers. It will not work if you send your Pokémon out to auto-battle.

By following these steps, you can effectively use the Lucky Egg to boost your Pokémon’s experience gain in Pokémon Scarlet and Violet.