import evaluate
seqeval = evaluate.load("seqeval")

Get the NER labels first, and then create a function that passes your true predictions and true labels to [~evaluate.EvaluationModule.compute] to calculate the scores:

import numpy as np
labels = [label_list[i] for i in example[f"ner_tags"]]
def compute_metrics(p):
     predictions, labels = p
     predictions = np.argmax(predictions, axis=2)