Can I share my account with a friend.

Why exactly do you want to do this? Generally one account should belong to only one person.

So Me and he can upload records on this account

Right, but, why? What's the benefit of that over just making two accounts?

so we can have more records on different games on one account

Just make 2 accounts, 1 for each, and count the records you have together then?

so we can have more records on different games on one account

Yeah that's dumb, don't do that.