you have not declared cookie(s)

[FoxCats03]

[WARNING] potential permission problems detected ('Access denied')

you have not declared cookie(s)
[WARNING] URI parameter '#1*' does not seem to be injectable

[CRITICAL] all tested parameters do not appear to be injectable. Try to increase values for '--level'/'--risk' options if you wish to perform more tests. If you suspect that there is some kind of protection mechanism involved (e.g. WAF) maybe you could try to use option '--tamper' (e.g. '--tamper=space2comment') and/or switch '--random-agent'

What should i do?

[stamparm]

1. for start, try to Google for sqlmap usage or tutorials
2. then, you could take a look at https://github.com/sqlmapproject/sqlmap/wiki/Usage#target-url and https://github.com/sqlmapproject/sqlmap/wiki/Usage#http-cookie-header
3. basically, as you have access denied and something cookie, you should declare the cookie with --cookie. also, you should provide something useful to the -u <- not just dummy URL of the site
4. please Google for some sqlmap usage

[FoxCats03]

How about to get id?

python sqlmap.py -u "http://www.target.com/vuln.php?id=1" -f --banner --dbs -
-users

In there "/vuln.php?id=1" how to get this?