I never enter a plea on a poss of marijuana but the judge keeps ordering drug screens is that legal its been over 120 days

It may be perfectly fine if you have waived time on the record as to this right. It sounds to me like you should speak to an experienced criminal attorney who is familiar with the courthouse in question to better understand what is going on with the judge on your case. Good luck.

Absolutely, the court can order pretrial drug testing to all persons accused of violating state law.