My bf has a very tight foreskin which leads to painful erections could this cause anorgasmia?

Tight foreskin: Your boyfriend should have this issue corrected by a urologist before it causes a serious issue or permanent damage.

BFneeds circumcision: Foreskin tight enough to cause painful erections means that intercourse is painful & unpleasant & thus unpleasant for both partners. Also means that penile hygeine is difficult or impossible. He should consult with a urologist who will likely recommend circumcision. Steroid cream for adult phimosis is usually unsatisfactory & impossible if foreskin opening is scarred.

Yes.: If your boyfriend has pain with erections, he likely has pain during intercourse due to the severe foreskin tightness. This can definitely contribute to anorgasmia. He should be evaluated by a urologist.