What is the ruling on the prayer of a 26-year-old girl who prays on and off, and does not pray on time, and how can she make up for missed prayers, and how can she maintain prayer and pray it on time?

You must repent and make up for the prayers you missed after puberty. If you know their number, make them up. Otherwise, make up what you believe is sufficient to absolve your responsibility. Be aware of the danger of neglecting prayer, for it is the pillar of religion. Whoever preserves it has succeeded and prospered, and whoever loses it has failed and lost, and will be resurrected with Pharaoh and Haman. Allah Almighty has threatened those who abandon it and are negligent with it with severe punishment.