Holy cow! Good for you! That's a lot. Haha I have 5,000 saved up--the most I've had since Shadowkeep. If you want to help pick and choose how you spend it (there's some awesome stuff coming out), check out this third party website: https://www.todayindestiny.com/eververseWeekly . It has a list of everything being offered every week, including when things are offered for silver/bright dust (if they also get offered for BD). Hope this helps. Have fun out there!