If I remember correctly it's a quiz show.

如果我没记错，是一个智力竞赛节目。

youdao

If I remember, the first song was about me.

如果我没记错，第一首歌是关于我的。

youdao

If I remember.

如果我记得的话。

youdao

And if I remember at least, I will repeat the question out loud so that everybody can hear it.

至少我肯定会记得，把问题大声的重复一遍,那么所有人都可以听到了。

耶鲁公开课 - 死亡课程节选

And if you remember this phrase, I don't know why you would, but this will help you learn the lanthanides in order.

如果你能记得这句话的话，我不管你们是怎么做到的，但是这个确实会帮助你按顺序记住镧系元素。

麻省理工公开课 - 固态化学导论课程节选

There might have been one Coke vending machine at my high school, if any, I don't even remember.

我高中可能有一台可乐自动售卖机,我记不太清楚了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

There was advanced radar on that plane, if I reckon correctly - if I remember correctly.

NPR: Invoking the State Secrets Privilege

And there was actually controversy, if I remember, about that experiment of sprinkling the nutrients on the sample.

NPR: Revisiting the Viking Missions to Mars

If I remember correctly, the EPL falls out to between 0.4 and 0.5 goals per match advantage for the home team.

FORBES: The SSAC Interview of Albert Larcada