To get to the end, you need to make a portal or get to one. To do this you might have to find a secret Seed. You can get seeds from apps. You can find them in villages in wells or other places. When your in the end dont fall off, if you spawn inside break the ceiling of the area. When you get out you can see lots of endermen. Don't look in their eyes or they will attack you. There will be towers and crystals on top you have to shoot with a bow and arrow. Before that make sure the Ender Dragon isn't aiming at you or else he will attack you with Dragon Breath. Shoot the crystals to stop him from healing. You will have to build up for some.

So, if you ever get to the end, just remember the goals, Crystals, then the Ender Dragon

I hope this helps!