If you have forgotten your combination it is important to first check if you have noted down the combination somewhere and to try important dates e.g. birthdays.
Should this not work we recommend trying all combinations from 0-0-0 to 9-9-9 to find the current combination.
While there are also other techniques described on the internet these typically require a certain lock type and professional skills which is why we recommend the above method.
Should you not be able to recover the lock combination in this way the lock is likely damaged and needs to be replaced. In such case please search for a replacement lock using your model number and follow our guide here to learn how to open the item to replace the lock (in some cases you might be required to also replace the zipper pullers).