Until when can one pray Minchah?

Until sunset. If one is late, they should try to pray up to 13 minutes after sunset.

If delayed further, one should recite the Amidah twice during Maariv, the first for Maariv and the second as a makeup for Minchah.

If one negligently missed Minchah, it cannot be made up in the next prayer.

Good luck - Menashe Israel

For the full text of the Mincha prayer

Aharon Razel in the "Mincha" clip: