bsas,
Since you're just getting started, focusing initially on analog electronics, and concentrating on audio in particular, I'd recommend the following based on your comments, questions, and reactions to the posts thus far:
DMM: Get the BM235 as you already plan to do. However, unless you're in a hurry, I'd recommend getting just one to start. Once you've used it in projects, you'll better understand if a second one of the same model is the best choice or if a different DMM would provide other functionality or capability that you need. I have a lot of DMMs and they're all different. Although they offer the same basic functionality, some are better than others for particular measurements or situations. Of course, if you don't mind having more than two DMMs, then you can certainly start off with two BM235.
Note that in the US, many Brymen DMMs are sold under the Greenlee brand (e.g., DM-820A, DM-830A, DM-860A). If you decide in the future that you want one of the fancier Brymen meters and US warranty coverage, that's an option.
Scope: You may want to start off with the Analog Discovery 2 and wait on buying a standalone oscilloscope. This will enable you to save some cash initially, learn about a lot of the functionality and specs that are currently overwhelming you, and allow Siglent to further mature their current models. The AD2 has plenty of functionality for analog and digital electronics with more than enough bandwidth for audio (I have both DS1054Z and AD2).
P.S. You may want to check out
JohnAudioTech's YouTube channel. He has some clever methods of working on audio gear with modest tools, including an even older Rigol scope than has been discussed in this thread.