ⓐdrop by ( ⓑstop over / ⓒdrop off )

[flytothesky]

HI~ Would you help me how to say this naturally please?

A: (On the phone) Are you at home?

B: Yea, I'm doing chores.

A: That's good, can I ⓐdrop by ( ⓑstop over / ⓒdrop off ) for a while?
I have something to tell you face to face.

B: Sure thing. Welcome anytime.

[bhaisahab]

A: (On the phone) Are you at home?

B: Yea, I'm doing chores.

A: That's good, can I drop by for a while?
I have something to tell you face to face.

B: Sure thing. You're welcome anytime.

[flytothesky]

Dearbhaisahab,

Thank you for your help

Would you explain me what's the difference those three words please?

ⓐdrop by ⓑstop over ⓒdrop off

I thought they all have same meaning but I guess I just can use ⓐdrop by... what do "ⓑstop over ⓒdrop off " mean?

[Ouisch]

"Stop over" could work in your sample sentence, but most native speakers would probably interpret it to mean that you wanted to spend an extended amount of time with them (whereas "stop by" means you want to visit briefly). "Drop off" indicates that your only intent is to deliver something to them. If you ask someone "Are you home? I need to drop off something." it means that you won't be at their place long enough to even shut off your car's engine; you will stop by and deliver a package/message/whatever and then leave.