Would Botox help my asymmetric eyebrows and give them a little lift? (Photos)

In your case Botox would be an excellent solution, because it will improve this asymmetry you present. Be sure you consult with a PS with experience in this matter.
Best of luck!

Yes it can certainly help.
Remember that no-one has perfect symmetry.  You may thus not get perfect symmetry, but one could improve this.
Best is to start off with small amounts and re-assess in 2 weeks.  Over injecting may cause the brow to droop which then leaves you with another problem.
Less is more