Last I remember, assuming miles didn't expire, I should have somewhere around 30k skymiles, 20k executive club miles and maybe around 20k lufthansa miles. But, for all I know they're all gone since none of the log ins even recognize my membership number of old.
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Miles/Points that Do and Don't Expire (may not be up to date)
DL Skymiles do not expire
BA Avois expire if no eligible activity in 3 years
LH miles have a 3 year hard expiry. Use them or lose them
Each ffp will have a list of ff partners that you can (theoretically) get awards
example
https://www.britishairways.com/en-gb...reward-flights
The web site
https://www.wheretocredit.com/ shows earnings on partners. Typically, but not always, you can burn(awards) on the same partners