Does PPC account daily budget work on the sponsored brand campaign?

It depends on your advertising goals and the performance of the keyword in question
In general, it can be worthwhile to keep a keyword that is delivering impressions because impressions can help increase brand awareness and visibility, even if the keyword is not generating clicks or conversions. However, if the keyword is not performing well in terms of clicks or conversions and is not contributing to your overall advertising objectives, it may not be worth the investment to continue targeting it.

Yes, the daily budget in a pay-per-click (PPC) advertising campaign applies to sponsored brand campaigns on Amazon as well.

If you’re talking about the daily budget cap then no, it don’t work with sponsored brand campaign, however, if you’re simply talking about the daily budget then of course each and every campaign has that.

If you have set the daily budget limit for the campaigns then it includes all types of campaigns in it.
Daily budget limit is for all the active campaigns of the account.

Yes account daily budget works on the sponsored brands campaigns as well.

Sponsored brand campaigns on Amazon are subject to the same daily budget as pay-per-click (PPC) campaigns.

yes, it worked like others, but amazon brand campaigns are costly campaigns, before going to launch them you must have to do proper planning and budget allocation for them.