To find and unlock the safe in the “Emergence” mission of Call of Duty: Black Ops 6, follow these detailed steps:

### Step 1: Progress to the Right Point in the Mission
– Obtain the Grappling Hook: Continue playing the mission until you obtain the grappling hook. This usually happens after defeating a significant enemy or boss.
– Return to the Main Hub Room: After getting the grappling hook, return to the main hub room in the center of the map.

### Step 2: Navigate to the East Wing
– Head East: From the main hub room, head east following signs for Joint Projects and Cognitive Research.
– Enter the Cognitive Research Section: Go through the doors and take a right up the stairs leading to the Cognitive Research section.

### Step 3: Navigate Through the Hallway
– Down the Hallway: After the jump scare, head down this long hallway.
– Take a Right: Take a right at the end of the hallway, which will lead you to a room with a Futz vending machine.
– Enter the Room: Enter the room past the door in which you find the Futz vending machine.

### Step 4: Locate the Radio
– Find the Radio: In this room, locate the radio tucked away on some shelves at the end of the third column on your right.
– Interact with the Radio: Interact with the radio to turn the frequencies and match the wavelengths on the radio. This will make the lights for each dial turn green.

### Step 5: Get the Safe Code
– Listen to the Numbers: Once you have tuned the radio, listen to the numbers it recites. These numbers will make up the code to unlock the safe. Note that safe codes are randomly generated, so your code will likely differ from other players.

### Step 6: Locate the Safe
– Find the Safe: After getting the code, turn around and hug the wall until you see the safe in the corner of the room.
– Unlock the Safe: Use the code you obtained from the radio to unlock the safe.

### Step 7: Collect Your Reward
– Reward: Unlocking the safe will give you $1000.

By following these steps, you should be able to find and unlock the safe in the “Emergence” mission of Call of Duty: Black Ops 6.