Is atlantic international university a scam? Is it acceptable in UK LAW SCHOOL, NIGERIA LAW SCHOOL?

Scam, maybe, but more likely a Degree Mill.
Further information here: HERE (https://www.askmehelpdesk.com/further-education/advice-avoiding-degree-mills-56488.html)

There is almost no school that would be accepted as a law school in other countries, Even US Bar approved schools do not give their graduates automatically ability to practice law in other nations.

You first need to find out the laws on out of county law schools. And find out the required testing requirements to practice law in each nation.

I will not say "scam" they normally do issue a dipolma or certificate, but its value is the issue

Anyone who thinks Atlantic International University is a Diploma Mill or a scam is guessing. They apparently have never trided to obtain a degree from this college. Don't make judgements and try to discredit anyone or any institute unless you have first hand experience. I do. It's not easy an they are not giving away anything and they are not selling degrees. They are very demanding. Believe me.