How to Remaster old Tracks?

Hello everyone
im trying to improve quality of one old live show recording and i need some help and advice. i know how to remove noise but after cleaning up, what should be next steps to improve the quality? equalization is preffered but any help is very welcome. what you can recommend me?
srry for english and thank you so much

here is the audio.

It’s a bit warped in places, (tape ?), that’s not curable in Audacity.
Can reduce-hiss, equalize, and fake-stereo in Audacity …

A good free plugin to create the live-on-stage fake-stereo-effect is “Stereo Touch”.

[ Whilst you’re there get Voxgeno’s free real-time equalizer plugin ]