not for love or money

not for love nor money or not for love or money (never, under no circumstances) — ни за что на свете; ни в коем случае; никоим образом

Example 1: It's incredibly popular. You can't get tickets for love nor money.

Example 2: He's hopeless and unreliable. I wouldn't give him a job for love nor money.

Example 3: I'd never visit them again, not for love or money.

if you say that you cannot or will not do something for love nor money, you mean that it is impossible to do or that you will not do it whatever happens.

cf.:
[by fair means or foul]
[move heaven and earth]
[beg, borrow, or steal]
[днем с огнем]