Different orthodontists will probably give different advice in this situation. The best thing, of course, is to contact your orthodontist. If you had only been wearing the broken aligner for a short time, you may be able to go back to the previous aligner in the sequence and wear it for another week. After that you can move on to the next undamaged aligner in the sequence – that is, skip one. If the damaged aligner was near the end of its wear period, you can try putting in the next one. In that case, I usually advise the patient to wear the next aligner for longer. Having a new aligner made is also an option.
This answer is for general information. Your own case needs an examination by an orthodontist.