Hello dear aspirant, hope you’re doing well. There is a log of difference between DU regular college and DU school of open learning . In a regular course you will have to give semester exams and have 70-75% attendance. While SOL you give exams only once a year.

Regular college is obviously much better than sol. Same is the case for the degree you get from both. Both the degrees will have university of delhi mentioned on it.
but while employing many recruiters prefer the regular degrees.
try to get admission in regular college but if things don’t work out then go for DU sol.

Studying from SOL is only better when you have to prepare for some competitive exams along side.