You could start w/importing numpy as np
.
You’re also trying to add strings (“correct”, “incorrect”) to a number and you cannot do that. You have to convert the data type of the numpy array. (most likely)
Further, did you research the exact error message? What did it say?
Here’s is a fixed and optimized code, along with explanations for each fix:
import numpy as np
rng = np.random.default_rng()
# Generate a random number between 1 and 100
np_number = rng.integers(low=1, high=101, size=1)[0] # Convert the array to an integer
print("Guess a number between 1 and 100")
# Convert the player's input to an integer
pla_number = int(input())
if pla_number == np_number:
answer = "correct"
else:
answer = "incorrect"
print(f"{answer} the answer was {np_number}")
# You don't need a loop to print np_number as it's already a single integer
Explanations for the fixes:

Added
[0]
tonp_number
to convert the array to an integer sincerng.integers
returns an array. 
Used an fstring for the
print
statement to make it more readable. 
Removed the unnecessary loop for printing
np_number
since it’s just a single integer.
Now, the code should work correctly and efficiently. It generates a random number, asks the player to guess a number, and then informs the player if their guess was correct or incorrect.