My IPad can’t screen record plz help

Tell us what test you tried to record your screen. Could you expand on what you mean by "null"? Did you not find a video in photos after screen recording?

Here are the instruction if you want to review them.

https://www.youtube.com/watch?v=yvkkcRP8-2Y

My software is messed up,

Name exact software that is not working and what the problem is.

I can’t update due to not being connected to the internet. I have a 15Mbps line ADSL

drop the connection in settings. reconnect & see if things improve.

If you are having problems with apps stalling or crashing,

-- double click on home button

-- swipe up on all the apps to force quit them

Re-boot ipad. power off router. wait power on.

Press and hold the Sleep/Wake button until a red slider appears, then drag the slider. Then press and hold the Sleep/Wake button until the Apple logo appears. 

Restart your iPhone - Apple Support

force power down if the above give you trouble.

Hold down both the Sleep/Wake button and the Home button. Ten seconds or more.  Hold until the Apple logo appears.

more details on re-booting:

How to Reboot Your iPad (Even If It's Frozen)

run speedof.me in a web browser to find out your connection speed.

Not able to play certain games such as Hill climb racing 2.

What can I do? This is an IPad Air first

Gen I am stuck on IPadOS 12.4.7 can’t update to 12.4.9 plz help.

Hello Unbeatable2fire,

It sounds as though you're able to connect to a Wi-Fi network, but not able to load content in data enabled apps. If this is the case, and you are seeing that Wi-Fi is connected in Settings > Wi-Fi? If you're successfully connected to a Wi-Fi, and you have a VPN installed or enabled please disable the VPN. If you continue to have issues with the VPN disabled, or no VPN exists the next step would be to restart the modem and router by disconnecting them from power, then power them back on.

If you continue to have issues from there please reach out to Apple via the Get Support website.

Have a great day!