I have heart failure with a mild leakage in my triscupid heart valve. should i choose surgery to repair it?

No: Everyone (close to 100% of human beings) have leakage of their tricuspid valve and it's even higher (probably 100%) of people with chf. Unless it's very severe, it should never be repaired as it isn't the cause of the CHF and the CHF won't get better by repairing it.

Leaky valve: Mild leak from tricuspid valve is not an indication for surgery.