all i can use is the hand tool. Nothing else works. Hand tool is stuck. Also space bar does not add space when typing.

​@gcindy152 

Tthe article I referred to is not directly about your problem, but contains many tips that  can help to find the cause of your problem, like:
Reboot in Safe Mode — the single most useful diagnostic
This test tells you in about five minutes whether your problem is Illustrator itself or something else on your system interfering with it.
macOS (Apple silicon): shut down, then press and hold the power button until "Loading startup options" appears, pick your startup disk, then hold Shift and click Continue in Safe Mode.
macOS (Intel): restart and hold Shift until the login window appears.

https://helpx.adobe.com/illustrator/kb/troubleshoot-preference-issues.html

Regarding space bar- accessibility is off. no space bar problem with text edit or email programs or Microsoft Word or Pages. Seems to be an adobe issue. I can’t even type in illustrator anymore since I only have the hand...so I have to figure that out first...

​@gcindy152 Since it happens in both Illustrator versions, it could be that some other app is conflicting.

See this post, that gives suggestions about checking in Safe Mode and disabling other apps/utilities:

​@gcindy152 sorry to hear that you are having ‘sticky’ keys...was this just recent? Under System Settings, have a look at your ‘Sticky Keys’ - Accessibility - Keyboard - Currently, my Sticky Keys, Slow Keys and even Accessibility are off. Curious to know if the Space bar is also in other applications such as Text Edit, or NotePad. 
 

If it’s a recent issue, I would purge Illustrator Preferences as you may have been corrupted, but saying that, it will default to the factory settings, so, if you have some things like your workspace, brushes, swatches, you may want to keep a back-up to re-import. 

Command K to open your Illustrator Preferences, and hit reset Preferences:
 

If that clears the sticky space bar and hand tool, then we know it was corrupted preferences. If the space bar is stuck in other applications and is cleared up through the Systems preferences, then we know it’s that.

let us know if that solves it!