1994 buick regal wont start unlless a jump off,and then run good

Sounds like the security system is failing.. Its really common in GM vehicles.. I actually had it happen to me a few years back and I found a part that you can get and install it yourself.. I haven't had any issues since.. check it out see if its something you might want.. hope it helps ya Do It Yourself GM Security bypass

Sounds like a bad battery that will not hold a charge. If it is near or over 5 years old...replace it . check the alternator while you are at it , check for loose belts the belt tension er. Don;t rule out the starter.. If the lights come on and are bright but the vehicle will not crank..the starter my be dying and is requiring more voltage to turn and start the vehicle. Your vehicle is nearing the age where starters , alternators, and water pumps go bad.

Means you have a bad battery, unless your alternator not charging, take an ohm meter set to dc volts put on battery while engine running should be 13.1 to 14.3 volts, if within voltage bad battery if lower bad alternator

Check the battery,have a load test done on the battery,now,it could be that the battery terminals,and battery cable ends are corroded,clean them really good,shining clean,this makes a big difference.Good idea to have the alternator checked also,while on the vehicle running,with the head lights on,and high blower motor,it should read at the battery,13.65 volts,to 14.25 volts.