Hi antonioo,
I'm sorry that you have prostate problems but welcome to the forum, mate.
Although your PSA is elevated it can be caused by non cancerous prostate problems. The pi-rads 3 means they are not sure if you've got clinically significant cancer or not.
Your biopsy results will clarify the situation. It will tell if you've got cancer and if so how aggressive it's likely to be.
Good luck, mate and please keep us updated with your results.👍