I've seen a few services here and there of people expediting the time frame of bitcoin transactions.
these people have access to mining pools and they can push the transactions that are stuck (sometimes for a separate fee that you pay them or the mining pool). that way the mining pool receives the transaction and gives it a higher priority.
there are also some scammers who pretend to have this kind of ability and just get the money and use free services like ViaBTC accelerator.
I've got 2 gaming computers and a server @ home.
How would I go about helping others speed up their transactions.
that is not how things work. in case you are thinking about mining, you can not mine bitcoin with a gaming computer (GPU) anymore, you will need ASICs to mine bitcoin.
even if you buy ASICs and start mining bitcoin you still won't be able to change anything, more mining power just increases the difficulty and there will still be the same number of blocks with same interval between them and with same space to include the same number of transactions. and fees would still be high.