My question is which one is correct:
a) I have been awarded the science award 5 times
or b) I was awarded the science award 5 times
Thank you :)
Both phrases are correct, but the meaning is subtly different.
"I have been awarded..." implies that the awards were fairly recent and/or you hope to receive further awards in future.
"I have been awarded a science prize five times so far in my career. If I work hard I may receive another next year."
"I was awarded..." has a feeling of being further back in time - it implies that the awards were in a previous phase of your life and are not expected to be repeated.
"I performed well when I was a schoolboy - I was awarded the science prize five times."